Home / 23,120.16-31,938.48-18,398.40

Finding the Fourth Proportional to 23,120.16, 31,938.48 and 18,398.40

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Solution

The fourth proportional to 23,120.16, 31,938.48 and 18,398.40 is: 25,415.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,120.16 : 31,938.48 = 18,398.40 : x
  2. Step 2: Convert to fraction form
    23,120.16/31,938.48 = 18,398.40/x
  3. Step 3: Cross multiply
    23,120.16x = 31,938.48 × 18,398.40
  4. Step 4: Simplify right side
    23,120.16x = 587,616,930.43
  5. Step 5: Solve for x
    x = 587,616,930.43/23,120.16
  6. Step 6: Final answer
    x = 25,415.78

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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.