Home / 18,488.70-25,514.40-10,105.20

Finding the Fourth Proportional to 18,488.70, 25,514.40 and 10,105.20

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Solution

The fourth proportional to 18,488.70, 25,514.40 and 10,105.20 is: 13,945.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488.70 : 25,514.40 = 10,105.20 : x
  2. Step 2: Convert to fraction form
    18,488.70/25,514.40 = 10,105.20/x
  3. Step 3: Cross multiply
    18,488.70x = 25,514.40 × 10,105.20
  4. Step 4: Simplify right side
    18,488.70x = 257,828,114.88
  5. Step 5: Solve for x
    x = 257,828,114.88/18,488.70
  6. Step 6: Final answer
    x = 13,945.17

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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.