Home / 31,818.33-43,889.13-20,502.63

Finding the Fourth Proportional to 31,818.33, 43,889.13 and 20,502.63

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Solution

The fourth proportional to 31,818.33, 43,889.13 and 20,502.63 is: 28,280.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,818.33 : 43,889.13 = 20,502.63 : x
  2. Step 2: Convert to fraction form
    31,818.33/43,889.13 = 20,502.63/x
  3. Step 3: Cross multiply
    31,818.33x = 43,889.13 × 20,502.63
  4. Step 4: Simplify right side
    31,818.33x = 899,842,593.41
  5. Step 5: Solve for x
    x = 899,842,593.41/31,818.33
  6. Step 6: Final answer
    x = 28,280.64

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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.