Home / 18,295.28-25,247.56-9,911.78

Finding the Fourth Proportional to 18,295.28, 25,247.56 and 9,911.78

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Solution

The fourth proportional to 18,295.28, 25,247.56 and 9,911.78 is: 13,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,295.28 : 25,247.56 = 9,911.78 : x
  2. Step 2: Convert to fraction form
    18,295.28/25,247.56 = 9,911.78/x
  3. Step 3: Cross multiply
    18,295.28x = 25,247.56 × 9,911.78
  4. Step 4: Simplify right side
    18,295.28x = 250,248,260.26
  5. Step 5: Solve for x
    x = 250,248,260.26/18,295.28
  6. Step 6: Final answer
    x = 13,678.30

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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.