Home / 15,131.25-22,703.18-8,109.45

Finding the Fourth Proportional to 15,131.25, 22,703.18 and 8,109.45

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Solution

The fourth proportional to 15,131.25, 22,703.18 and 8,109.45 is: 12,167.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,131.25 : 22,703.18 = 8,109.45 : x
  2. Step 2: Convert to fraction form
    15,131.25/22,703.18 = 8,109.45/x
  3. Step 3: Cross multiply
    15,131.25x = 22,703.18 × 8,109.45
  4. Step 4: Simplify right side
    15,131.25x = 184,110,262.50
  5. Step 5: Solve for x
    x = 184,110,262.50/15,131.25
  6. Step 6: Final answer
    x = 12,167.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.