Home / 31,450.76-43,397.19-18,703.69

Finding the Fourth Proportional to 31,450.76, 43,397.19 and 18,703.69

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Solution

The fourth proportional to 31,450.76, 43,397.19 and 18,703.69 is: 25,808.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,450.76 : 43,397.19 = 18,703.69 : x
  2. Step 2: Convert to fraction form
    31,450.76/43,397.19 = 18,703.69/x
  3. Step 3: Cross multiply
    31,450.76x = 43,397.19 × 18,703.69
  4. Step 4: Simplify right side
    31,450.76x = 811,687,588.63
  5. Step 5: Solve for x
    x = 811,687,588.63/31,450.76
  6. Step 6: Final answer
    x = 25,808.20

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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.