Home / 13,781.46-20,639.34-7,532.10

Finding the Fourth Proportional to 13,781.46, 20,639.34 and 7,532.10

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Solution

The fourth proportional to 13,781.46, 20,639.34 and 7,532.10 is: 11,280.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,781.46 : 20,639.34 = 7,532.10 : x
  2. Step 2: Convert to fraction form
    13,781.46/20,639.34 = 7,532.10/x
  3. Step 3: Cross multiply
    13,781.46x = 20,639.34 × 7,532.10
  4. Step 4: Simplify right side
    13,781.46x = 155,457,572.81
  5. Step 5: Solve for x
    x = 155,457,572.81/13,781.46
  6. Step 6: Final answer
    x = 11,280.20

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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.