Home / 20,397.02-28,151.16-12,013.52

Finding the Fourth Proportional to 20,397.02, 28,151.16 and 12,013.52

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Solution

The fourth proportional to 20,397.02, 28,151.16 and 12,013.52 is: 16,580.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.02 : 28,151.16 = 12,013.52 : x
  2. Step 2: Convert to fraction form
    20,397.02/28,151.16 = 12,013.52/x
  3. Step 3: Cross multiply
    20,397.02x = 28,151.16 × 12,013.52
  4. Step 4: Simplify right side
    20,397.02x = 338,194,523.68
  5. Step 5: Solve for x
    x = 338,194,523.68/20,397.02
  6. Step 6: Final answer
    x = 16,580.58

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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.