Home / 15,208.08-20,987.25-8,494.31

Finding the Fourth Proportional to 15,208.08, 20,987.25 and 8,494.31

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Solution

The fourth proportional to 15,208.08, 20,987.25 and 8,494.31 is: 11,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,208.08 : 20,987.25 = 8,494.31 : x
  2. Step 2: Convert to fraction form
    15,208.08/20,987.25 = 8,494.31/x
  3. Step 3: Cross multiply
    15,208.08x = 20,987.25 × 8,494.31
  4. Step 4: Simplify right side
    15,208.08x = 178,272,102.61
  5. Step 5: Solve for x
    x = 178,272,102.61/15,208.08
  6. Step 6: Final answer
    x = 11,722.20

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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.