Home / 15,591.59-21,491.12-12,182.64

Finding the Fourth Proportional to 15,591.59, 21,491.12 and 12,182.64

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Solution

The fourth proportional to 15,591.59, 21,491.12 and 12,182.64 is: 16,792.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,591.59 : 21,491.12 = 12,182.64 : x
  2. Step 2: Convert to fraction form
    15,591.59/21,491.12 = 12,182.64/x
  3. Step 3: Cross multiply
    15,591.59x = 21,491.12 × 12,182.64
  4. Step 4: Simplify right side
    15,591.59x = 261,818,578.16
  5. Step 5: Solve for x
    x = 261,818,578.16/15,591.59
  6. Step 6: Final answer
    x = 16,792.29

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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.