Home / 28,263.48-42,381-11,618.88

Finding the Fourth Proportional to 28,263.48, 42,381 and 11,618.88

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Solution

The fourth proportional to 28,263.48, 42,381 and 11,618.88 is: 17,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,263.48 : 42,381 = 11,618.88 : x
  2. Step 2: Convert to fraction form
    28,263.48/42,381 = 11,618.88/x
  3. Step 3: Cross multiply
    28,263.48x = 42,381 × 11,618.88
  4. Step 4: Simplify right side
    28,263.48x = 492,419,753.28
  5. Step 5: Solve for x
    x = 492,419,753.28/28,263.48
  6. Step 6: Final answer
    x = 17,422.47

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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.