Home / 31,785.13-43,864.23-17,638.75

Finding the Fourth Proportional to 31,785.13, 43,864.23 and 17,638.75

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Solution

The fourth proportional to 31,785.13, 43,864.23 and 17,638.75 is: 24,341.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,785.13 : 43,864.23 = 17,638.75 : x
  2. Step 2: Convert to fraction form
    31,785.13/43,864.23 = 17,638.75/x
  3. Step 3: Cross multiply
    31,785.13x = 43,864.23 × 17,638.75
  4. Step 4: Simplify right side
    31,785.13x = 773,710,186.91
  5. Step 5: Solve for x
    x = 773,710,186.91/31,785.13
  6. Step 6: Final answer
    x = 24,341.89

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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.