Home / 31,421.24-47,131.86-19,742.66

Finding the Fourth Proportional to 31,421.24, 47,131.86 and 19,742.66

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Solution

The fourth proportional to 31,421.24, 47,131.86 and 19,742.66 is: 29,613.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421.24 : 47,131.86 = 19,742.66 : x
  2. Step 2: Convert to fraction form
    31,421.24/47,131.86 = 19,742.66/x
  3. Step 3: Cross multiply
    31,421.24x = 47,131.86 × 19,742.66
  4. Step 4: Simplify right side
    31,421.24x = 930,508,287.15
  5. Step 5: Solve for x
    x = 930,508,287.15/31,421.24
  6. Step 6: Final answer
    x = 29,613.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.