Home / 18,279.28-25,225.48-9,895.78

Finding the Fourth Proportional to 18,279.28, 25,225.48 and 9,895.78

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Solution

The fourth proportional to 18,279.28, 25,225.48 and 9,895.78 is: 13,656.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,279.28 : 25,225.48 = 9,895.78 : x
  2. Step 2: Convert to fraction form
    18,279.28/25,225.48 = 9,895.78/x
  3. Step 3: Cross multiply
    18,279.28x = 25,225.48 × 9,895.78
  4. Step 4: Simplify right side
    18,279.28x = 249,625,800.47
  5. Step 5: Solve for x
    x = 249,625,800.47/18,279.28
  6. Step 6: Final answer
    x = 13,656.22

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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.