Home / 18,939.52-26,132.34-12,969.76

Finding the Fourth Proportional to 18,939.52, 26,132.34 and 12,969.76

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Solution

The fourth proportional to 18,939.52, 26,132.34 and 12,969.76 is: 17,895.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939.52 : 26,132.34 = 12,969.76 : x
  2. Step 2: Convert to fraction form
    18,939.52/26,132.34 = 12,969.76/x
  3. Step 3: Cross multiply
    18,939.52x = 26,132.34 × 12,969.76
  4. Step 4: Simplify right side
    18,939.52x = 338,930,178.04
  5. Step 5: Solve for x
    x = 338,930,178.04/18,939.52
  6. Step 6: Final answer
    x = 17,895.39

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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.