Home / 15,711.26-21,684.15-15,192.08

Finding the Fourth Proportional to 15,711.26, 21,684.15 and 15,192.08

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Solution

The fourth proportional to 15,711.26, 21,684.15 and 15,192.08 is: 20,967.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,711.26 : 21,684.15 = 15,192.08 : x
  2. Step 2: Convert to fraction form
    15,711.26/21,684.15 = 15,192.08/x
  3. Step 3: Cross multiply
    15,711.26x = 21,684.15 × 15,192.08
  4. Step 4: Simplify right side
    15,711.26x = 329,427,233.11
  5. Step 5: Solve for x
    x = 329,427,233.11/15,711.26
  6. Step 6: Final answer
    x = 20,967.60

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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.