Home / 15,745.49-21,691.80-10,957.20

Finding the Fourth Proportional to 15,745.49, 21,691.80 and 10,957.20

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Solution

The fourth proportional to 15,745.49, 21,691.80 and 10,957.20 is: 15,095.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,745.49 : 21,691.80 = 10,957.20 : x
  2. Step 2: Convert to fraction form
    15,745.49/21,691.80 = 10,957.20/x
  3. Step 3: Cross multiply
    15,745.49x = 21,691.80 × 10,957.20
  4. Step 4: Simplify right side
    15,745.49x = 237,681,390.96
  5. Step 5: Solve for x
    x = 237,681,390.96/15,745.49
  6. Step 6: Final answer
    x = 15,095.21

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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.