Home / 28,407.88-42,624.06-11,780.02

Finding the Fourth Proportional to 28,407.88, 42,624.06 and 11,780.02

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Solution

The fourth proportional to 28,407.88, 42,624.06 and 11,780.02 is: 17,675.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,407.88 : 42,624.06 = 11,780.02 : x
  2. Step 2: Convert to fraction form
    28,407.88/42,624.06 = 11,780.02/x
  3. Step 3: Cross multiply
    28,407.88x = 42,624.06 × 11,780.02
  4. Step 4: Simplify right side
    28,407.88x = 502,112,279.28
  5. Step 5: Solve for x
    x = 502,112,279.28/28,407.88
  6. Step 6: Final answer
    x = 17,675.11

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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.