Home / 12,729.60-17,566.56-7,140

Finding the Fourth Proportional to 12,729.60, 17,566.56 and 7,140

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Solution

The fourth proportional to 12,729.60, 17,566.56 and 7,140 is: 9,853.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.60 : 17,566.56 = 7,140 : x
  2. Step 2: Convert to fraction form
    12,729.60/17,566.56 = 7,140/x
  3. Step 3: Cross multiply
    12,729.60x = 17,566.56 × 7,140
  4. Step 4: Simplify right side
    12,729.60x = 125,425,238.40
  5. Step 5: Solve for x
    x = 125,425,238.40/12,729.60
  6. Step 6: Final answer
    x = 9,853.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.