Home / 25,320.95-34,942.20-13,990.25

Finding the Fourth Proportional to 25,320.95, 34,942.20 and 13,990.25

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Solution

The fourth proportional to 25,320.95, 34,942.20 and 13,990.25 is: 19,306.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,320.95 : 34,942.20 = 13,990.25 : x
  2. Step 2: Convert to fraction form
    25,320.95/34,942.20 = 13,990.25/x
  3. Step 3: Cross multiply
    25,320.95x = 34,942.20 × 13,990.25
  4. Step 4: Simplify right side
    25,320.95x = 488,850,113.55
  5. Step 5: Solve for x
    x = 488,850,113.55/25,320.95
  6. Step 6: Final answer
    x = 19,306.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.