Home / 21,001.62-31,437.24-15,705.42

Finding the Fourth Proportional to 21,001.62, 31,437.24 and 15,705.42

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Solution

The fourth proportional to 21,001.62, 31,437.24 and 15,705.42 is: 23,509.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,001.62 : 31,437.24 = 15,705.42 : x
  2. Step 2: Convert to fraction form
    21,001.62/31,437.24 = 15,705.42/x
  3. Step 3: Cross multiply
    21,001.62x = 31,437.24 × 15,705.42
  4. Step 4: Simplify right side
    21,001.62x = 493,735,057.84
  5. Step 5: Solve for x
    x = 493,735,057.84/21,001.62
  6. Step 6: Final answer
    x = 23,509.38

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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.