Home / 28,734.36-39,650.85-15,987.12

Finding the Fourth Proportional to 28,734.36, 39,650.85 and 15,987.12

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Solution

The fourth proportional to 28,734.36, 39,650.85 and 15,987.12 is: 22,060.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,734.36 : 39,650.85 = 15,987.12 : x
  2. Step 2: Convert to fraction form
    28,734.36/39,650.85 = 15,987.12/x
  3. Step 3: Cross multiply
    28,734.36x = 39,650.85 × 15,987.12
  4. Step 4: Simplify right side
    28,734.36x = 633,902,897.05
  5. Step 5: Solve for x
    x = 633,902,897.05/28,734.36
  6. Step 6: Final answer
    x = 22,060.80

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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.