Home / 42,490.68-63,743.37-12,911.52

Finding the Fourth Proportional to 42,490.68, 63,743.37 and 12,911.52

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Solution

The fourth proportional to 42,490.68, 63,743.37 and 12,911.52 is: 19,369.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,490.68 : 63,743.37 = 12,911.52 : x
  2. Step 2: Convert to fraction form
    42,490.68/63,743.37 = 12,911.52/x
  3. Step 3: Cross multiply
    42,490.68x = 63,743.37 × 12,911.52
  4. Step 4: Simplify right side
    42,490.68x = 823,023,796.62
  5. Step 5: Solve for x
    x = 823,023,796.62/42,490.68
  6. Step 6: Final answer
    x = 19,369.51

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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.