Home / 20,862.18-31,258.08-10,318.14

Finding the Fourth Proportional to 20,862.18, 31,258.08 and 10,318.14

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Solution

The fourth proportional to 20,862.18, 31,258.08 and 10,318.14 is: 15,459.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862.18 : 31,258.08 = 10,318.14 : x
  2. Step 2: Convert to fraction form
    20,862.18/31,258.08 = 10,318.14/x
  3. Step 3: Cross multiply
    20,862.18x = 31,258.08 × 10,318.14
  4. Step 4: Simplify right side
    20,862.18x = 322,525,245.57
  5. Step 5: Solve for x
    x = 322,525,245.57/20,862.18
  6. Step 6: Final answer
    x = 15,459.81

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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.