Home / 28,057.01-38,708.73-18,514.80

Finding the Fourth Proportional to 28,057.01, 38,708.73 and 18,514.80

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Solution

The fourth proportional to 28,057.01, 38,708.73 and 18,514.80 is: 25,543.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,057.01 : 38,708.73 = 18,514.80 : x
  2. Step 2: Convert to fraction form
    28,057.01/38,708.73 = 18,514.80/x
  3. Step 3: Cross multiply
    28,057.01x = 38,708.73 × 18,514.80
  4. Step 4: Simplify right side
    28,057.01x = 716,684,394.20
  5. Step 5: Solve for x
    x = 716,684,394.20/28,057.01
  6. Step 6: Final answer
    x = 25,543.87

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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.