Home / 28,110.30-42,116.85-13,287.30

Finding the Fourth Proportional to 28,110.30, 42,116.85 and 13,287.30

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Solution

The fourth proportional to 28,110.30, 42,116.85 and 13,287.30 is: 19,907.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,110.30 : 42,116.85 = 13,287.30 : x
  2. Step 2: Convert to fraction form
    28,110.30/42,116.85 = 13,287.30/x
  3. Step 3: Cross multiply
    28,110.30x = 42,116.85 × 13,287.30
  4. Step 4: Simplify right side
    28,110.30x = 559,619,221.01
  5. Step 5: Solve for x
    x = 559,619,221.01/28,110.30
  6. Step 6: Final answer
    x = 19,907.98

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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.