Home / 18,817.90-25,966.82-10,862.69

Finding the Fourth Proportional to 18,817.90, 25,966.82 and 10,862.69

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Solution

The fourth proportional to 18,817.90, 25,966.82 and 10,862.69 is: 14,989.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,817.90 : 25,966.82 = 10,862.69 : x
  2. Step 2: Convert to fraction form
    18,817.90/25,966.82 = 10,862.69/x
  3. Step 3: Cross multiply
    18,817.90x = 25,966.82 × 10,862.69
  4. Step 4: Simplify right side
    18,817.90x = 282,069,413.27
  5. Step 5: Solve for x
    x = 282,069,413.27/18,817.90
  6. Step 6: Final answer
    x = 14,989.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.