Home / 42,386.88-63,581.41-12,805.68

Finding the Fourth Proportional to 42,386.88, 63,581.41 and 12,805.68

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Solution

The fourth proportional to 42,386.88, 63,581.41 and 12,805.68 is: 19,208.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,386.88 : 63,581.41 = 12,805.68 : x
  2. Step 2: Convert to fraction form
    42,386.88/63,581.41 = 12,805.68/x
  3. Step 3: Cross multiply
    42,386.88x = 63,581.41 × 12,805.68
  4. Step 4: Simplify right side
    42,386.88x = 814,203,190.41
  5. Step 5: Solve for x
    x = 814,203,190.41/42,386.88
  6. Step 6: Final answer
    x = 19,208.85

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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.