Home / 19,615.40-29,439.30-9,101.60

Finding the Fourth Proportional to 19,615.40, 29,439.30 and 9,101.60

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Solution

The fourth proportional to 19,615.40, 29,439.30 and 9,101.60 is: 13,659.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,615.40 : 29,439.30 = 9,101.60 : x
  2. Step 2: Convert to fraction form
    19,615.40/29,439.30 = 9,101.60/x
  3. Step 3: Cross multiply
    19,615.40x = 29,439.30 × 9,101.60
  4. Step 4: Simplify right side
    19,615.40x = 267,944,732.88
  5. Step 5: Solve for x
    x = 267,944,732.88/19,615.40
  6. Step 6: Final answer
    x = 13,659.92

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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.