Home / 20,549.06-28,372.75-13,285.45

Finding the Fourth Proportional to 20,549.06, 28,372.75 and 13,285.45

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Solution

The fourth proportional to 20,549.06, 28,372.75 and 13,285.45 is: 18,343.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,549.06 : 28,372.75 = 13,285.45 : x
  2. Step 2: Convert to fraction form
    20,549.06/28,372.75 = 13,285.45/x
  3. Step 3: Cross multiply
    20,549.06x = 28,372.75 × 13,285.45
  4. Step 4: Simplify right side
    20,549.06x = 376,944,753.74
  5. Step 5: Solve for x
    x = 376,944,753.74/20,549.06
  6. Step 6: Final answer
    x = 18,343.65

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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.