Home / 13,695.40-20,531.10-9,298.60

Finding the Fourth Proportional to 13,695.40, 20,531.10 and 9,298.60

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Solution

The fourth proportional to 13,695.40, 20,531.10 and 9,298.60 is: 13,939.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,695.40 : 20,531.10 = 9,298.60 : x
  2. Step 2: Convert to fraction form
    13,695.40/20,531.10 = 9,298.60/x
  3. Step 3: Cross multiply
    13,695.40x = 20,531.10 × 9,298.60
  4. Step 4: Simplify right side
    13,695.40x = 190,910,486.46
  5. Step 5: Solve for x
    x = 190,910,486.46/13,695.40
  6. Step 6: Final answer
    x = 13,939.75

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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.