Home / 28,613.20-42,840.56-21,571.88

Finding the Fourth Proportional to 28,613.20, 42,840.56 and 21,571.88

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Solution

The fourth proportional to 28,613.20, 42,840.56 and 21,571.88 is: 32,298.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,613.20 : 42,840.56 = 21,571.88 : x
  2. Step 2: Convert to fraction form
    28,613.20/42,840.56 = 21,571.88/x
  3. Step 3: Cross multiply
    28,613.20x = 42,840.56 × 21,571.88
  4. Step 4: Simplify right side
    28,613.20x = 924,151,419.45
  5. Step 5: Solve for x
    x = 924,151,419.45/28,613.20
  6. Step 6: Final answer
    x = 32,298.08

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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.