Home / 42,569.29-63,863.94-12,987.13

Finding the Fourth Proportional to 42,569.29, 63,863.94 and 12,987.13

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Solution

The fourth proportional to 42,569.29, 63,863.94 and 12,987.13 is: 19,483.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,569.29 : 63,863.94 = 12,987.13 : x
  2. Step 2: Convert to fraction form
    42,569.29/63,863.94 = 12,987.13/x
  3. Step 3: Cross multiply
    42,569.29x = 63,863.94 × 12,987.13
  4. Step 4: Simplify right side
    42,569.29x = 829,409,291.09
  5. Step 5: Solve for x
    x = 829,409,291.09/42,569.29
  6. Step 6: Final answer
    x = 19,483.75

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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.