Home / 18,288.11-27,437.70-12,961.59

Finding the Fourth Proportional to 18,288.11, 27,437.70 and 12,961.59

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Solution

The fourth proportional to 18,288.11, 27,437.70 and 12,961.59 is: 19,446.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,288.11 : 27,437.70 = 12,961.59 : x
  2. Step 2: Convert to fraction form
    18,288.11/27,437.70 = 12,961.59/x
  3. Step 3: Cross multiply
    18,288.11x = 27,437.70 × 12,961.59
  4. Step 4: Simplify right side
    18,288.11x = 355,636,332.99
  5. Step 5: Solve for x
    x = 355,636,332.99/18,288.11
  6. Step 6: Final answer
    x = 19,446.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.