Home / 13,948.12-20,922.18-4,087.40

Finding the Fourth Proportional to 13,948.12, 20,922.18 and 4,087.40

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Solution

The fourth proportional to 13,948.12, 20,922.18 and 4,087.40 is: 6,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,948.12 : 20,922.18 = 4,087.40 : x
  2. Step 2: Convert to fraction form
    13,948.12/20,922.18 = 4,087.40/x
  3. Step 3: Cross multiply
    13,948.12x = 20,922.18 × 4,087.40
  4. Step 4: Simplify right side
    13,948.12x = 85,517,318.53
  5. Step 5: Solve for x
    x = 85,517,318.53/13,948.12
  6. Step 6: Final answer
    x = 6,131.10

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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.