Home / 23,143.90-31,938.69-13,072.47

Finding the Fourth Proportional to 23,143.90, 31,938.69 and 13,072.47

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Solution

The fourth proportional to 23,143.90, 31,938.69 and 13,072.47 is: 18,040.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,143.90 : 31,938.69 = 13,072.47 : x
  2. Step 2: Convert to fraction form
    23,143.90/31,938.69 = 13,072.47/x
  3. Step 3: Cross multiply
    23,143.90x = 31,938.69 × 13,072.47
  4. Step 4: Simplify right side
    23,143.90x = 417,517,566.86
  5. Step 5: Solve for x
    x = 417,517,566.86/23,143.90
  6. Step 6: Final answer
    x = 18,040.07

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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.