Home / 21,585.86-29,789.07-12,154.76

Finding the Fourth Proportional to 21,585.86, 29,789.07 and 12,154.76

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Solution

The fourth proportional to 21,585.86, 29,789.07 and 12,154.76 is: 16,773.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,585.86 : 29,789.07 = 12,154.76 : x
  2. Step 2: Convert to fraction form
    21,585.86/29,789.07 = 12,154.76/x
  3. Step 3: Cross multiply
    21,585.86x = 29,789.07 × 12,154.76
  4. Step 4: Simplify right side
    21,585.86x = 362,078,996.47
  5. Step 5: Solve for x
    x = 362,078,996.47/21,585.86
  6. Step 6: Final answer
    x = 16,773.90

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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.