Home / 21,061.16-31,545.66-12,835.88

Finding the Fourth Proportional to 21,061.16, 31,545.66 and 12,835.88

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Solution

The fourth proportional to 21,061.16, 31,545.66 and 12,835.88 is: 19,225.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061.16 : 31,545.66 = 12,835.88 : x
  2. Step 2: Convert to fraction form
    21,061.16/31,545.66 = 12,835.88/x
  3. Step 3: Cross multiply
    21,061.16x = 31,545.66 × 12,835.88
  4. Step 4: Simplify right side
    21,061.16x = 404,916,306.28
  5. Step 5: Solve for x
    x = 404,916,306.28/21,061.16
  6. Step 6: Final answer
    x = 19,225.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.