Home / 20,456.01-28,243.49-15,751.53

Finding the Fourth Proportional to 20,456.01, 28,243.49 and 15,751.53

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Solution

The fourth proportional to 20,456.01, 28,243.49 and 15,751.53 is: 21,748.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,456.01 : 28,243.49 = 15,751.53 : x
  2. Step 2: Convert to fraction form
    20,456.01/28,243.49 = 15,751.53/x
  3. Step 3: Cross multiply
    20,456.01x = 28,243.49 × 15,751.53
  4. Step 4: Simplify right side
    20,456.01x = 444,878,101.28
  5. Step 5: Solve for x
    x = 444,878,101.28/20,456.01
  6. Step 6: Final answer
    x = 21,748.04

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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.