Home / 28,572.29-42,865.28-11,923.09

Finding the Fourth Proportional to 28,572.29, 42,865.28 and 11,923.09

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Solution

The fourth proportional to 28,572.29, 42,865.28 and 11,923.09 is: 17,887.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,572.29 : 42,865.28 = 11,923.09 : x
  2. Step 2: Convert to fraction form
    28,572.29/42,865.28 = 11,923.09/x
  3. Step 3: Cross multiply
    28,572.29x = 42,865.28 × 11,923.09
  4. Step 4: Simplify right side
    28,572.29x = 511,086,591.32
  5. Step 5: Solve for x
    x = 511,086,591.32/28,572.29
  6. Step 6: Final answer
    x = 17,887.49

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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.