Home / 21,870.27-32,862.11-19,104.39

Finding the Fourth Proportional to 21,870.27, 32,862.11 and 19,104.39

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Solution

The fourth proportional to 21,870.27, 32,862.11 and 19,104.39 is: 28,706.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,870.27 : 32,862.11 = 19,104.39 : x
  2. Step 2: Convert to fraction form
    21,870.27/32,862.11 = 19,104.39/x
  3. Step 3: Cross multiply
    21,870.27x = 32,862.11 × 19,104.39
  4. Step 4: Simplify right side
    21,870.27x = 627,810,470.14
  5. Step 5: Solve for x
    x = 627,810,470.14/21,870.27
  6. Step 6: Final answer
    x = 28,706.11

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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.