Home / 23,100.40-31,875.18-13,029.28

Finding the Fourth Proportional to 23,100.40, 31,875.18 and 13,029.28

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Solution

The fourth proportional to 23,100.40, 31,875.18 and 13,029.28 is: 17,978.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,100.40 : 31,875.18 = 13,029.28 : x
  2. Step 2: Convert to fraction form
    23,100.40/31,875.18 = 13,029.28/x
  3. Step 3: Cross multiply
    23,100.40x = 31,875.18 × 13,029.28
  4. Step 4: Simplify right side
    23,100.40x = 415,310,645.27
  5. Step 5: Solve for x
    x = 415,310,645.27/23,100.40
  6. Step 6: Final answer
    x = 17,978.50

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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.