Home / 21,229.38-31,881.04-19,560.40

Finding the Fourth Proportional to 21,229.38, 31,881.04 and 19,560.40

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Solution

The fourth proportional to 21,229.38, 31,881.04 and 19,560.40 is: 29,374.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.38 : 31,881.04 = 19,560.40 : x
  2. Step 2: Convert to fraction form
    21,229.38/31,881.04 = 19,560.40/x
  3. Step 3: Cross multiply
    21,229.38x = 31,881.04 × 19,560.40
  4. Step 4: Simplify right side
    21,229.38x = 623,605,894.82
  5. Step 5: Solve for x
    x = 623,605,894.82/21,229.38
  6. Step 6: Final answer
    x = 29,374.66

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1.5x scale

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.