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Finding the Fourth Proportional to 9,011.42, 12,444.32 and 8,520.56

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Solution

The fourth proportional to 9,011.42, 12,444.32 and 8,520.56 is: 11,766.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,011.42 : 12,444.32 = 8,520.56 : x
  2. Step 2: Convert to fraction form
    9,011.42/12,444.32 = 8,520.56/x
  3. Step 3: Cross multiply
    9,011.42x = 12,444.32 × 8,520.56
  4. Step 4: Simplify right side
    9,011.42x = 106,032,532.62
  5. Step 5: Solve for x
    x = 106,032,532.62/9,011.42
  6. Step 6: Final answer
    x = 11,766.46

Related Problems

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Half scale
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Double scale
Find fourth proportional to 9,012.42, 12,445.70 and 8,521.56
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.