Home / 13,688.76-20,535.68-4,331.14

Finding the Fourth Proportional to 13,688.76, 20,535.68 and 4,331.14

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Solution

The fourth proportional to 13,688.76, 20,535.68 and 4,331.14 is: 6,497.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,688.76 : 20,535.68 = 4,331.14 : x
  2. Step 2: Convert to fraction form
    13,688.76/20,535.68 = 4,331.14/x
  3. Step 3: Cross multiply
    13,688.76x = 20,535.68 × 4,331.14
  4. Step 4: Simplify right side
    13,688.76x = 88,942,842.91
  5. Step 5: Solve for x
    x = 88,942,842.91/13,688.76
  6. Step 6: Final answer
    x = 6,497.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.