Home / 28,098.80-38,723.06-20,127.16

Finding the Fourth Proportional to 28,098.80, 38,723.06 and 20,127.16

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Solution

The fourth proportional to 28,098.80, 38,723.06 and 20,127.16 is: 27,737.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,098.80 : 38,723.06 = 20,127.16 : x
  2. Step 2: Convert to fraction form
    28,098.80/38,723.06 = 20,127.16/x
  3. Step 3: Cross multiply
    28,098.80x = 38,723.06 × 20,127.16
  4. Step 4: Simplify right side
    28,098.80x = 779,385,224.31
  5. Step 5: Solve for x
    x = 779,385,224.31/28,098.80
  6. Step 6: Final answer
    x = 27,737.31

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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.