Home / 13,862.78-20,781.82-5,095.64

Finding the Fourth Proportional to 13,862.78, 20,781.82 and 5,095.64

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Solution

The fourth proportional to 13,862.78, 20,781.82 and 5,095.64 is: 7,638.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,862.78 : 20,781.82 = 5,095.64 : x
  2. Step 2: Convert to fraction form
    13,862.78/20,781.82 = 5,095.64/x
  3. Step 3: Cross multiply
    13,862.78x = 20,781.82 × 5,095.64
  4. Step 4: Simplify right side
    13,862.78x = 105,896,673.26
  5. Step 5: Solve for x
    x = 105,896,673.26/13,862.78
  6. Step 6: Final answer
    x = 7,638.92

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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.