Home / 9,539.28-14,232.78-8,136.72

Finding the Fourth Proportional to 9,539.28, 14,232.78 and 8,136.72

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Solution

The fourth proportional to 9,539.28, 14,232.78 and 8,136.72 is: 12,140.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,539.28 : 14,232.78 = 8,136.72 : x
  2. Step 2: Convert to fraction form
    9,539.28/14,232.78 = 8,136.72/x
  3. Step 3: Cross multiply
    9,539.28x = 14,232.78 × 8,136.72
  4. Step 4: Simplify right side
    9,539.28x = 115,808,145.68
  5. Step 5: Solve for x
    x = 115,808,145.68/9,539.28
  6. Step 6: Final answer
    x = 12,140.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.