Home / 20,475.53-28,253.91-11,522.80

Finding the Fourth Proportional to 20,475.53, 28,253.91 and 11,522.80

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Solution

The fourth proportional to 20,475.53, 28,253.91 and 11,522.80 is: 15,900.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475.53 : 28,253.91 = 11,522.80 : x
  2. Step 2: Convert to fraction form
    20,475.53/28,253.91 = 11,522.80/x
  3. Step 3: Cross multiply
    20,475.53x = 28,253.91 × 11,522.80
  4. Step 4: Simplify right side
    20,475.53x = 325,564,154.15
  5. Step 5: Solve for x
    x = 325,564,154.15/20,475.53
  6. Step 6: Final answer
    x = 15,900.16

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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.