Home / 18,291.11-25,262.55-12,312.39

Finding the Fourth Proportional to 18,291.11, 25,262.55 and 12,312.39

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Solution

The fourth proportional to 18,291.11, 25,262.55 and 12,312.39 is: 17,005.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.11 : 25,262.55 = 12,312.39 : x
  2. Step 2: Convert to fraction form
    18,291.11/25,262.55 = 12,312.39/x
  3. Step 3: Cross multiply
    18,291.11x = 25,262.55 × 12,312.39
  4. Step 4: Simplify right side
    18,291.11x = 311,042,367.99
  5. Step 5: Solve for x
    x = 311,042,367.99/18,291.11
  6. Step 6: Final answer
    x = 17,005.12

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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.