Home / 21,432.39-29,576.91-12,001.15

Finding the Fourth Proportional to 21,432.39, 29,576.91 and 12,001.15

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Solution

The fourth proportional to 21,432.39, 29,576.91 and 12,001.15 is: 16,561.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,432.39 : 29,576.91 = 12,001.15 : x
  2. Step 2: Convert to fraction form
    21,432.39/29,576.91 = 12,001.15/x
  3. Step 3: Cross multiply
    21,432.39x = 29,576.91 × 12,001.15
  4. Step 4: Simplify right side
    21,432.39x = 354,956,933.45
  5. Step 5: Solve for x
    x = 354,956,933.45/21,432.39
  6. Step 6: Final answer
    x = 16,561.71

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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.