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Finding the Fourth Proportional to 9,007.35, 13,420.40 and 8,504.34

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Solution

The fourth proportional to 9,007.35, 13,420.40 and 8,504.34 is: 12,670.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,007.35 : 13,420.40 = 8,504.34 : x
  2. Step 2: Convert to fraction form
    9,007.35/13,420.40 = 8,504.34/x
  3. Step 3: Cross multiply
    9,007.35x = 13,420.40 × 8,504.34
  4. Step 4: Simplify right side
    9,007.35x = 114,131,644.54
  5. Step 5: Solve for x
    x = 114,131,644.54/9,007.35
  6. Step 6: Final answer
    x = 12,670.95

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.