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Finding the Fourth Proportional to 35,407.61, 48,859.52 and 20,296.80

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Solution

The fourth proportional to 35,407.61, 48,859.52 and 20,296.80 is: 28,007.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,407.61 : 48,859.52 = 20,296.80 : x
  2. Step 2: Convert to fraction form
    35,407.61/48,859.52 = 20,296.80/x
  3. Step 3: Cross multiply
    35,407.61x = 48,859.52 × 20,296.80
  4. Step 4: Simplify right side
    35,407.61x = 991,691,970.01
  5. Step 5: Solve for x
    x = 991,691,970.01/35,407.61
  6. Step 6: Final answer
    x = 28,007.88

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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.