Home / 18,139.68-25,031.52-10,180.80

Finding the Fourth Proportional to 18,139.68, 25,031.52 and 10,180.80

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Solution

The fourth proportional to 18,139.68, 25,031.52 and 10,180.80 is: 14,048.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.68 : 25,031.52 = 10,180.80 : x
  2. Step 2: Convert to fraction form
    18,139.68/25,031.52 = 10,180.80/x
  3. Step 3: Cross multiply
    18,139.68x = 25,031.52 × 10,180.80
  4. Step 4: Simplify right side
    18,139.68x = 254,840,898.82
  5. Step 5: Solve for x
    x = 254,840,898.82/18,139.68
  6. Step 6: Final answer
    x = 14,048.81

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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.