Home / 28,279.13-39,026.41-15,703.88

Finding the Fourth Proportional to 28,279.13, 39,026.41 and 15,703.88

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Solution

The fourth proportional to 28,279.13, 39,026.41 and 15,703.88 is: 21,672.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,279.13 : 39,026.41 = 15,703.88 : x
  2. Step 2: Convert to fraction form
    28,279.13/39,026.41 = 15,703.88/x
  3. Step 3: Cross multiply
    28,279.13x = 39,026.41 × 15,703.88
  4. Step 4: Simplify right side
    28,279.13x = 612,865,825.08
  5. Step 5: Solve for x
    x = 612,865,825.08/28,279.13
  6. Step 6: Final answer
    x = 21,672.02

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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.