Home / 28,126.08-38,812.62-15,379.92

Finding the Fourth Proportional to 28,126.08, 38,812.62 and 15,379.92

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Solution

The fourth proportional to 28,126.08, 38,812.62 and 15,379.92 is: 21,223.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,126.08 : 38,812.62 = 15,379.92 : x
  2. Step 2: Convert to fraction form
    28,126.08/38,812.62 = 15,379.92/x
  3. Step 3: Cross multiply
    28,126.08x = 38,812.62 × 15,379.92
  4. Step 4: Simplify right side
    28,126.08x = 596,934,990.59
  5. Step 5: Solve for x
    x = 596,934,990.59/28,126.08
  6. Step 6: Final answer
    x = 21,223.54

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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.