Home / 25,168.80-34,733.12-13,990.88

Finding the Fourth Proportional to 25,168.80, 34,733.12 and 13,990.88

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Solution

The fourth proportional to 25,168.80, 34,733.12 and 13,990.88 is: 19,307.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,168.80 : 34,733.12 = 13,990.88 : x
  2. Step 2: Convert to fraction form
    25,168.80/34,733.12 = 13,990.88/x
  3. Step 3: Cross multiply
    25,168.80x = 34,733.12 × 13,990.88
  4. Step 4: Simplify right side
    25,168.80x = 485,946,913.95
  5. Step 5: Solve for x
    x = 485,946,913.95/25,168.80
  6. Step 6: Final answer
    x = 19,307.51

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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.