Home / 31,939.56-47,869.65-20,256.12

Finding the Fourth Proportional to 31,939.56, 47,869.65 and 20,256.12

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Solution

The fourth proportional to 31,939.56, 47,869.65 and 20,256.12 is: 30,359.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,939.56 : 47,869.65 = 20,256.12 : x
  2. Step 2: Convert to fraction form
    31,939.56/47,869.65 = 20,256.12/x
  3. Step 3: Cross multiply
    31,939.56x = 47,869.65 × 20,256.12
  4. Step 4: Simplify right side
    31,939.56x = 969,653,374.76
  5. Step 5: Solve for x
    x = 969,653,374.76/31,939.56
  6. Step 6: Final answer
    x = 30,359.01

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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.