Home / 21,343.14-31,988.79-15,104.98

Finding the Fourth Proportional to 21,343.14, 31,988.79 and 15,104.98

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Solution

The fourth proportional to 21,343.14, 31,988.79 and 15,104.98 is: 22,639.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.14 : 31,988.79 = 15,104.98 : x
  2. Step 2: Convert to fraction form
    21,343.14/31,988.79 = 15,104.98/x
  3. Step 3: Cross multiply
    21,343.14x = 31,988.79 × 15,104.98
  4. Step 4: Simplify right side
    21,343.14x = 483,189,990.96
  5. Step 5: Solve for x
    x = 483,189,990.96/21,343.14
  6. Step 6: Final answer
    x = 22,639.12

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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.