Home / 28,572.57-42,865.65-11,923.35

Finding the Fourth Proportional to 28,572.57, 42,865.65 and 11,923.35

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Solution

The fourth proportional to 28,572.57, 42,865.65 and 11,923.35 is: 17,887.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,572.57 : 42,865.65 = 11,923.35 : x
  2. Step 2: Convert to fraction form
    28,572.57/42,865.65 = 11,923.35/x
  3. Step 3: Cross multiply
    28,572.57x = 42,865.65 × 11,923.35
  4. Step 4: Simplify right side
    28,572.57x = 511,102,147.93
  5. Step 5: Solve for x
    x = 511,102,147.93/28,572.57
  6. Step 6: Final answer
    x = 17,887.86

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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.