Home / 31,286.56-43,176.53-17,139.40

Finding the Fourth Proportional to 31,286.56, 43,176.53 and 17,139.40

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Solution

The fourth proportional to 31,286.56, 43,176.53 and 17,139.40 is: 23,652.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,286.56 : 43,176.53 = 17,139.40 : x
  2. Step 2: Convert to fraction form
    31,286.56/43,176.53 = 17,139.40/x
  3. Step 3: Cross multiply
    31,286.56x = 43,176.53 × 17,139.40
  4. Step 4: Simplify right side
    31,286.56x = 740,019,818.28
  5. Step 5: Solve for x
    x = 740,019,818.28/31,286.56
  6. Step 6: Final answer
    x = 23,652.96

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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.