Home / 21,258.55-31,868.14-9,406.04

Finding the Fourth Proportional to 21,258.55, 31,868.14 and 9,406.04

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Solution

The fourth proportional to 21,258.55, 31,868.14 and 9,406.04 is: 14,100.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,258.55 : 31,868.14 = 9,406.04 : x
  2. Step 2: Convert to fraction form
    21,258.55/31,868.14 = 9,406.04/x
  3. Step 3: Cross multiply
    21,258.55x = 31,868.14 × 9,406.04
  4. Step 4: Simplify right side
    21,258.55x = 299,752,860.80
  5. Step 5: Solve for x
    x = 299,752,860.80/21,258.55
  6. Step 6: Final answer
    x = 14,100.35

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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.