Home / 28,251.72-38,987.38-15,676.47

Finding the Fourth Proportional to 28,251.72, 38,987.38 and 15,676.47

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Solution

The fourth proportional to 28,251.72, 38,987.38 and 15,676.47 is: 21,633.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.72 : 38,987.38 = 15,676.47 : x
  2. Step 2: Convert to fraction form
    28,251.72/38,987.38 = 15,676.47/x
  3. Step 3: Cross multiply
    28,251.72x = 38,987.38 × 15,676.47
  4. Step 4: Simplify right side
    28,251.72x = 611,184,492.95
  5. Step 5: Solve for x
    x = 611,184,492.95/28,251.72
  6. Step 6: Final answer
    x = 21,633.53

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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.