Home / 18,729.10-25,828.56-13,959.62

Finding the Fourth Proportional to 18,729.10, 25,828.56 and 13,959.62

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Solution

The fourth proportional to 18,729.10, 25,828.56 and 13,959.62 is: 19,251.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.10 : 25,828.56 = 13,959.62 : x
  2. Step 2: Convert to fraction form
    18,729.10/25,828.56 = 13,959.62/x
  3. Step 3: Cross multiply
    18,729.10x = 25,828.56 × 13,959.62
  4. Step 4: Simplify right side
    18,729.10x = 360,556,795.74
  5. Step 5: Solve for x
    x = 360,556,795.74/18,729.10
  6. Step 6: Final answer
    x = 19,251.15

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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.