Home / 15,551.19-21,468.51-9,179.70

Finding the Fourth Proportional to 15,551.19, 21,468.51 and 9,179.70

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Solution

The fourth proportional to 15,551.19, 21,468.51 and 9,179.70 is: 12,672.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551.19 : 21,468.51 = 9,179.70 : x
  2. Step 2: Convert to fraction form
    15,551.19/21,468.51 = 9,179.70/x
  3. Step 3: Cross multiply
    15,551.19x = 21,468.51 × 9,179.70
  4. Step 4: Simplify right side
    15,551.19x = 197,074,400.74
  5. Step 5: Solve for x
    x = 197,074,400.74/15,551.19
  6. Step 6: Final answer
    x = 12,672.63

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Double scale
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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.