Home / 28,572.07-42,864.90-11,922.85

Finding the Fourth Proportional to 28,572.07, 42,864.90 and 11,922.85

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Solution

The fourth proportional to 28,572.07, 42,864.90 and 11,922.85 is: 17,887.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,572.07 : 42,864.90 = 11,922.85 : x
  2. Step 2: Convert to fraction form
    28,572.07/42,864.90 = 11,922.85/x
  3. Step 3: Cross multiply
    28,572.07x = 42,864.90 × 11,922.85
  4. Step 4: Simplify right side
    28,572.07x = 511,071,772.97
  5. Step 5: Solve for x
    x = 511,071,772.97/28,572.07
  6. Step 6: Final answer
    x = 17,887.11

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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.