Home / 42,569.81-63,854.52-12,987.54

Finding the Fourth Proportional to 42,569.81, 63,854.52 and 12,987.54

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Solution

The fourth proportional to 42,569.81, 63,854.52 and 12,987.54 is: 19,481.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,569.81 : 63,854.52 = 12,987.54 : x
  2. Step 2: Convert to fraction form
    42,569.81/63,854.52 = 12,987.54/x
  3. Step 3: Cross multiply
    42,569.81x = 63,854.52 × 12,987.54
  4. Step 4: Simplify right side
    42,569.81x = 829,313,132.68
  5. Step 5: Solve for x
    x = 829,313,132.68/42,569.81
  6. Step 6: Final answer
    x = 19,481.25

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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.