Home / 31,475.39-43,431.53-18,047.21

Finding the Fourth Proportional to 31,475.39, 43,431.53 and 18,047.21

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Solution

The fourth proportional to 31,475.39, 43,431.53 and 18,047.21 is: 24,902.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,475.39 : 43,431.53 = 18,047.21 : x
  2. Step 2: Convert to fraction form
    31,475.39/43,431.53 = 18,047.21/x
  3. Step 3: Cross multiply
    31,475.39x = 43,431.53 × 18,047.21
  4. Step 4: Simplify right side
    31,475.39x = 783,817,635.14
  5. Step 5: Solve for x
    x = 783,817,635.14/31,475.39
  6. Step 6: Final answer
    x = 24,902.56

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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.