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Finding the Fourth Proportional to 35,398.78, 48,853.47 and 20,296.78

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Solution

The fourth proportional to 35,398.78, 48,853.47 and 20,296.78 is: 28,011.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,398.78 : 48,853.47 = 20,296.78 : x
  2. Step 2: Convert to fraction form
    35,398.78/48,853.47 = 20,296.78/x
  3. Step 3: Cross multiply
    35,398.78x = 48,853.47 × 20,296.78
  4. Step 4: Simplify right side
    35,398.78x = 991,568,132.83
  5. Step 5: Solve for x
    x = 991,568,132.83/35,398.78
  6. Step 6: Final answer
    x = 28,011.36

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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.