Home / 31,864.36-43,968-18,432.96

Finding the Fourth Proportional to 31,864.36, 43,968 and 18,432.96

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Solution

The fourth proportional to 31,864.36, 43,968 and 18,432.96 is: 25,434.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,864.36 : 43,968 = 18,432.96 : x
  2. Step 2: Convert to fraction form
    31,864.36/43,968 = 18,432.96/x
  3. Step 3: Cross multiply
    31,864.36x = 43,968 × 18,432.96
  4. Step 4: Simplify right side
    31,864.36x = 810,460,385.28
  5. Step 5: Solve for x
    x = 810,460,385.28/31,864.36
  6. Step 6: Final answer
    x = 25,434.70

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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.