Home / 31,674.52-43,746.78-21,585.70

Finding the Fourth Proportional to 31,674.52, 43,746.78 and 21,585.70

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Solution

The fourth proportional to 31,674.52, 43,746.78 and 21,585.70 is: 29,812.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,674.52 : 43,746.78 = 21,585.70 : x
  2. Step 2: Convert to fraction form
    31,674.52/43,746.78 = 21,585.70/x
  3. Step 3: Cross multiply
    31,674.52x = 43,746.78 × 21,585.70
  4. Step 4: Simplify right side
    31,674.52x = 944,304,869.05
  5. Step 5: Solve for x
    x = 944,304,869.05/31,674.52
  6. Step 6: Final answer
    x = 29,812.76

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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.