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Finding the Fourth Proportional to 35,498.94, 48,979.80 and 21,697.79

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Solution

The fourth proportional to 35,498.94, 48,979.80 and 21,697.79 is: 29,937.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,498.94 : 48,979.80 = 21,697.79 : x
  2. Step 2: Convert to fraction form
    35,498.94/48,979.80 = 21,697.79/x
  3. Step 3: Cross multiply
    35,498.94x = 48,979.80 × 21,697.79
  4. Step 4: Simplify right side
    35,498.94x = 1,062,753,169.74
  5. Step 5: Solve for x
    x = 1,062,753,169.74/35,498.94
  6. Step 6: Final answer
    x = 29,937.60

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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.