Home / 28,127.43-38,816.90-15,381.48

Finding the Fourth Proportional to 28,127.43, 38,816.90 and 15,381.48

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Solution

The fourth proportional to 28,127.43, 38,816.90 and 15,381.48 is: 21,227.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,127.43 : 38,816.90 = 15,381.48 : x
  2. Step 2: Convert to fraction form
    28,127.43/38,816.90 = 15,381.48/x
  3. Step 3: Cross multiply
    28,127.43x = 38,816.90 × 15,381.48
  4. Step 4: Simplify right side
    28,127.43x = 597,061,294.10
  5. Step 5: Solve for x
    x = 597,061,294.10/28,127.43
  6. Step 6: Final answer
    x = 21,227.01

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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.