Home / 28,572.03-42,864.89-11,922.80

Finding the Fourth Proportional to 28,572.03, 42,864.89 and 11,922.80

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Solution

The fourth proportional to 28,572.03, 42,864.89 and 11,922.80 is: 17,887.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,572.03 : 42,864.89 = 11,922.80 : x
  2. Step 2: Convert to fraction form
    28,572.03/42,864.89 = 11,922.80/x
  3. Step 3: Cross multiply
    28,572.03x = 42,864.89 × 11,922.80
  4. Step 4: Simplify right side
    28,572.03x = 511,069,735.28
  5. Step 5: Solve for x
    x = 511,069,735.28/28,572.03
  6. Step 6: Final answer
    x = 17,887.06

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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.