Home / 42,431.13-63,631.80-12,437.13

Finding the Fourth Proportional to 42,431.13, 63,631.80 and 12,437.13

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Solution

The fourth proportional to 42,431.13, 63,631.80 and 12,437.13 is: 18,651.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,431.13 : 63,631.80 = 12,437.13 : x
  2. Step 2: Convert to fraction form
    42,431.13/63,631.80 = 12,437.13/x
  3. Step 3: Cross multiply
    42,431.13x = 63,631.80 × 12,437.13
  4. Step 4: Simplify right side
    42,431.13x = 791,396,968.73
  5. Step 5: Solve for x
    x = 791,396,968.73/42,431.13
  6. Step 6: Final answer
    x = 18,651.33

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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.