Home / 28,085.69-42,140-18,095.66

Finding the Fourth Proportional to 28,085.69, 42,140 and 18,095.66

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Solution

The fourth proportional to 28,085.69, 42,140 and 18,095.66 is: 27,150.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.69 : 42,140 = 18,095.66 : x
  2. Step 2: Convert to fraction form
    28,085.69/42,140 = 18,095.66/x
  3. Step 3: Cross multiply
    28,085.69x = 42,140 × 18,095.66
  4. Step 4: Simplify right side
    28,085.69x = 762,551,112.40
  5. Step 5: Solve for x
    x = 762,551,112.40/28,085.69
  6. Step 6: Final answer
    x = 27,150.88

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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.