Home / 18,363.28-25,341.40-9,979.76

Finding the Fourth Proportional to 18,363.28, 25,341.40 and 9,979.76

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Solution

The fourth proportional to 18,363.28, 25,341.40 and 9,979.76 is: 13,772.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,363.28 : 25,341.40 = 9,979.76 : x
  2. Step 2: Convert to fraction form
    18,363.28/25,341.40 = 9,979.76/x
  3. Step 3: Cross multiply
    18,363.28x = 25,341.40 × 9,979.76
  4. Step 4: Simplify right side
    18,363.28x = 252,901,090.06
  5. Step 5: Solve for x
    x = 252,901,090.06/18,363.28
  6. Step 6: Final answer
    x = 13,772.11

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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.