Home / 28,306.13-42,459.19-12,705.53

Finding the Fourth Proportional to 28,306.13, 42,459.19 and 12,705.53

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Solution

The fourth proportional to 28,306.13, 42,459.19 and 12,705.53 is: 19,058.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,306.13 : 42,459.19 = 12,705.53 : x
  2. Step 2: Convert to fraction form
    28,306.13/42,459.19 = 12,705.53/x
  3. Step 3: Cross multiply
    28,306.13x = 42,459.19 × 12,705.53
  4. Step 4: Simplify right side
    28,306.13x = 539,466,236.50
  5. Step 5: Solve for x
    x = 539,466,236.50/28,306.13
  6. Step 6: Final answer
    x = 19,058.29

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Similar ratio
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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.