Home / 20,635.48-28,477.02-11,204.20

Finding the Fourth Proportional to 20,635.48, 28,477.02 and 11,204.20

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Solution

The fourth proportional to 20,635.48, 28,477.02 and 11,204.20 is: 15,461.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,635.48 : 28,477.02 = 11,204.20 : x
  2. Step 2: Convert to fraction form
    20,635.48/28,477.02 = 11,204.20/x
  3. Step 3: Cross multiply
    20,635.48x = 28,477.02 × 11,204.20
  4. Step 4: Simplify right side
    20,635.48x = 319,062,227.48
  5. Step 5: Solve for x
    x = 319,062,227.48/20,635.48
  6. Step 6: Final answer
    x = 15,461.83

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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.