Home / 12,869.88-19,302.52-3,862.16

Finding the Fourth Proportional to 12,869.88, 19,302.52 and 3,862.16

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Solution

The fourth proportional to 12,869.88, 19,302.52 and 3,862.16 is: 5,792.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,869.88 : 19,302.52 = 3,862.16 : x
  2. Step 2: Convert to fraction form
    12,869.88/19,302.52 = 3,862.16/x
  3. Step 3: Cross multiply
    12,869.88x = 19,302.52 × 3,862.16
  4. Step 4: Simplify right side
    12,869.88x = 74,549,420.64
  5. Step 5: Solve for x
    x = 74,549,420.64/12,869.88
  6. Step 6: Final answer
    x = 5,792.55

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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.