Home / 31,785.66-43,864.47-17,638.74

Finding the Fourth Proportional to 31,785.66, 43,864.47 and 17,638.74

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Solution

The fourth proportional to 31,785.66, 43,864.47 and 17,638.74 is: 24,341.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,785.66 : 43,864.47 = 17,638.74 : x
  2. Step 2: Convert to fraction form
    31,785.66/43,864.47 = 17,638.74/x
  3. Step 3: Cross multiply
    31,785.66x = 43,864.47 × 17,638.74
  4. Step 4: Simplify right side
    31,785.66x = 773,713,981.57
  5. Step 5: Solve for x
    x = 773,713,981.57/31,785.66
  6. Step 6: Final answer
    x = 24,341.61

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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.