Home / 15,031.12-20,744.48-8,657.92

Finding the Fourth Proportional to 15,031.12, 20,744.48 and 8,657.92

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Solution

The fourth proportional to 15,031.12, 20,744.48 and 8,657.92 is: 11,948.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,031.12 : 20,744.48 = 8,657.92 : x
  2. Step 2: Convert to fraction form
    15,031.12/20,744.48 = 8,657.92/x
  3. Step 3: Cross multiply
    15,031.12x = 20,744.48 × 8,657.92
  4. Step 4: Simplify right side
    15,031.12x = 179,604,048.28
  5. Step 5: Solve for x
    x = 179,604,048.28/15,031.12
  6. Step 6: Final answer
    x = 11,948.81

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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.