Home / 21,258.80-31,868.52-9,406.29

Finding the Fourth Proportional to 21,258.80, 31,868.52 and 9,406.29

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Solution

The fourth proportional to 21,258.80, 31,868.52 and 9,406.29 is: 14,100.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258.80 : 31,868.52 = 9,406.29 : x
  2. Step 2: Convert to fraction form
    21,258.80/31,868.52 = 9,406.29/x
  3. Step 3: Cross multiply
    21,258.80x = 31,868.52 × 9,406.29
  4. Step 4: Simplify right side
    21,258.80x = 299,764,358.13
  5. Step 5: Solve for x
    x = 299,764,358.13/21,258.80
  6. Step 6: Final answer
    x = 14,100.72

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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.