Home / 20,955.48-31,432.83-8,475.36

Finding the Fourth Proportional to 20,955.48, 31,432.83 and 8,475.36

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Solution

The fourth proportional to 20,955.48, 31,432.83 and 8,475.36 is: 12,712.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.48 : 31,432.83 = 8,475.36 : x
  2. Step 2: Convert to fraction form
    20,955.48/31,432.83 = 8,475.36/x
  3. Step 3: Cross multiply
    20,955.48x = 31,432.83 × 8,475.36
  4. Step 4: Simplify right side
    20,955.48x = 266,404,550.07
  5. Step 5: Solve for x
    x = 266,404,550.07/20,955.48
  6. Step 6: Final answer
    x = 12,712.88

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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.