Home / 28,306.19-42,459.28-12,705.59

Finding the Fourth Proportional to 28,306.19, 42,459.28 and 12,705.59

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Solution

The fourth proportional to 28,306.19, 42,459.28 and 12,705.59 is: 19,058.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,306.19 : 42,459.28 = 12,705.59 : x
  2. Step 2: Convert to fraction form
    28,306.19/42,459.28 = 12,705.59/x
  3. Step 3: Cross multiply
    28,306.19x = 42,459.28 × 12,705.59
  4. Step 4: Simplify right side
    28,306.19x = 539,469,959.31
  5. Step 5: Solve for x
    x = 539,469,959.31/28,306.19
  6. Step 6: Final answer
    x = 19,058.38

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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.