Home / 21,990.72-30,349.17-12,562.32

Finding the Fourth Proportional to 21,990.72, 30,349.17 and 12,562.32

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Solution

The fourth proportional to 21,990.72, 30,349.17 and 12,562.32 is: 17,337.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990.72 : 30,349.17 = 12,562.32 : x
  2. Step 2: Convert to fraction form
    21,990.72/30,349.17 = 12,562.32/x
  3. Step 3: Cross multiply
    21,990.72x = 30,349.17 × 12,562.32
  4. Step 4: Simplify right side
    21,990.72x = 381,255,985.27
  5. Step 5: Solve for x
    x = 381,255,985.27/21,990.72
  6. Step 6: Final answer
    x = 17,337.13

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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.