Home / 42,830.30-64,245.45-13,248.39

Finding the Fourth Proportional to 42,830.30, 64,245.45 and 13,248.39

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Solution

The fourth proportional to 42,830.30, 64,245.45 and 13,248.39 is: 19,872.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,830.30 : 64,245.45 = 13,248.39 : x
  2. Step 2: Convert to fraction form
    42,830.30/64,245.45 = 13,248.39/x
  3. Step 3: Cross multiply
    42,830.30x = 64,245.45 × 13,248.39
  4. Step 4: Simplify right side
    42,830.30x = 851,149,067.93
  5. Step 5: Solve for x
    x = 851,149,067.93/42,830.30
  6. Step 6: Final answer
    x = 19,872.59

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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.