Home / 42,342.48-63,513.99-12,760.20

Finding the Fourth Proportional to 42,342.48, 63,513.99 and 12,760.20

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Solution

The fourth proportional to 42,342.48, 63,513.99 and 12,760.20 is: 19,140.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,342.48 : 63,513.99 = 12,760.20 : x
  2. Step 2: Convert to fraction form
    42,342.48/63,513.99 = 12,760.20/x
  3. Step 3: Cross multiply
    42,342.48x = 63,513.99 × 12,760.20
  4. Step 4: Simplify right side
    42,342.48x = 810,451,215.20
  5. Step 5: Solve for x
    x = 810,451,215.20/42,342.48
  6. Step 6: Final answer
    x = 19,140.38

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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.