Home / 20,818.95-28,732.01-11,864.58

Finding the Fourth Proportional to 20,818.95, 28,732.01 and 11,864.58

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Solution

The fourth proportional to 20,818.95, 28,732.01 and 11,864.58 is: 16,374.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,818.95 : 28,732.01 = 11,864.58 : x
  2. Step 2: Convert to fraction form
    20,818.95/28,732.01 = 11,864.58/x
  3. Step 3: Cross multiply
    20,818.95x = 28,732.01 × 11,864.58
  4. Step 4: Simplify right side
    20,818.95x = 340,893,171.88
  5. Step 5: Solve for x
    x = 340,893,171.88/20,818.95
  6. Step 6: Final answer
    x = 16,374.18

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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.