Home / 18,368.12-25,338.48-12,708.20

Finding the Fourth Proportional to 18,368.12, 25,338.48 and 12,708.20

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Solution

The fourth proportional to 18,368.12, 25,338.48 and 12,708.20 is: 17,530.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,368.12 : 25,338.48 = 12,708.20 : x
  2. Step 2: Convert to fraction form
    18,368.12/25,338.48 = 12,708.20/x
  3. Step 3: Cross multiply
    18,368.12x = 25,338.48 × 12,708.20
  4. Step 4: Simplify right side
    18,368.12x = 322,006,471.54
  5. Step 5: Solve for x
    x = 322,006,471.54/18,368.12
  6. Step 6: Final answer
    x = 17,530.73

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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.