Home / 28,081.24-38,751.98-15,505.90

Finding the Fourth Proportional to 28,081.24, 38,751.98 and 15,505.90

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Solution

The fourth proportional to 28,081.24, 38,751.98 and 15,505.90 is: 21,398.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081.24 : 38,751.98 = 15,505.90 : x
  2. Step 2: Convert to fraction form
    28,081.24/38,751.98 = 15,505.90/x
  3. Step 3: Cross multiply
    28,081.24x = 38,751.98 × 15,505.90
  4. Step 4: Simplify right side
    28,081.24x = 600,884,326.68
  5. Step 5: Solve for x
    x = 600,884,326.68/28,081.24
  6. Step 6: Final answer
    x = 21,398.07

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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.