Home / 31,491.28-43,454.76-19,389.85

Finding the Fourth Proportional to 31,491.28, 43,454.76 and 19,389.85

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Solution

The fourth proportional to 31,491.28, 43,454.76 and 19,389.85 is: 26,756.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,491.28 : 43,454.76 = 19,389.85 : x
  2. Step 2: Convert to fraction form
    31,491.28/43,454.76 = 19,389.85/x
  3. Step 3: Cross multiply
    31,491.28x = 43,454.76 × 19,389.85
  4. Step 4: Simplify right side
    31,491.28x = 842,581,278.19
  5. Step 5: Solve for x
    x = 842,581,278.19/31,491.28
  6. Step 6: Final answer
    x = 26,756.02

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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.