Home / 28,436.85-42,565.30-17,870.30

Finding the Fourth Proportional to 28,436.85, 42,565.30 and 17,870.30

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Solution

The fourth proportional to 28,436.85, 42,565.30 and 17,870.30 is: 26,748.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,436.85 : 42,565.30 = 17,870.30 : x
  2. Step 2: Convert to fraction form
    28,436.85/42,565.30 = 17,870.30/x
  3. Step 3: Cross multiply
    28,436.85x = 42,565.30 × 17,870.30
  4. Step 4: Simplify right side
    28,436.85x = 760,654,845.44
  5. Step 5: Solve for x
    x = 760,654,845.44/28,436.85
  6. Step 6: Final answer
    x = 26,748.92

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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.