Home / 31,471.85-43,431.95-18,047.47

Finding the Fourth Proportional to 31,471.85, 43,431.95 and 18,047.47

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Solution

The fourth proportional to 31,471.85, 43,431.95 and 18,047.47 is: 24,905.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,471.85 : 43,431.95 = 18,047.47 : x
  2. Step 2: Convert to fraction form
    31,471.85/43,431.95 = 18,047.47/x
  3. Step 3: Cross multiply
    31,471.85x = 43,431.95 × 18,047.47
  4. Step 4: Simplify right side
    31,471.85x = 783,836,751.21
  5. Step 5: Solve for x
    x = 783,836,751.21/31,471.85
  6. Step 6: Final answer
    x = 24,905.96

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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.