Home / 28,005.10-41,959.05-18,139.30

Finding the Fourth Proportional to 28,005.10, 41,959.05 and 18,139.30

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Solution

The fourth proportional to 28,005.10, 41,959.05 and 18,139.30 is: 27,177.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,005.10 : 41,959.05 = 18,139.30 : x
  2. Step 2: Convert to fraction form
    28,005.10/41,959.05 = 18,139.30/x
  3. Step 3: Cross multiply
    28,005.10x = 41,959.05 × 18,139.30
  4. Step 4: Simplify right side
    28,005.10x = 761,107,795.67
  5. Step 5: Solve for x
    x = 761,107,795.67/28,005.10
  6. Step 6: Final answer
    x = 27,177.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.