Home / 20,925.16-28,882.20-12,962.86

Finding the Fourth Proportional to 20,925.16, 28,882.20 and 12,962.86

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Solution

The fourth proportional to 20,925.16, 28,882.20 and 12,962.86 is: 17,892.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.16 : 28,882.20 = 12,962.86 : x
  2. Step 2: Convert to fraction form
    20,925.16/28,882.20 = 12,962.86/x
  3. Step 3: Cross multiply
    20,925.16x = 28,882.20 × 12,962.86
  4. Step 4: Simplify right side
    20,925.16x = 374,395,915.09
  5. Step 5: Solve for x
    x = 374,395,915.09/20,925.16
  6. Step 6: Final answer
    x = 17,892.14

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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.