Home / 11,521.12-15,898.98-6,485.34

Finding the Fourth Proportional to 11,521.12, 15,898.98 and 6,485.34

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Solution

The fourth proportional to 11,521.12, 15,898.98 and 6,485.34 is: 8,949.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,521.12 : 15,898.98 = 6,485.34 : x
  2. Step 2: Convert to fraction form
    11,521.12/15,898.98 = 6,485.34/x
  3. Step 3: Cross multiply
    11,521.12x = 15,898.98 × 6,485.34
  4. Step 4: Simplify right side
    11,521.12x = 103,110,290.95
  5. Step 5: Solve for x
    x = 103,110,290.95/11,521.12
  6. Step 6: Final answer
    x = 8,949.68

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.