Home / 28,696.28-42,954.24-18,129.65

Finding the Fourth Proportional to 28,696.28, 42,954.24 and 18,129.65

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Solution

The fourth proportional to 28,696.28, 42,954.24 and 18,129.65 is: 27,137.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,696.28 : 42,954.24 = 18,129.65 : x
  2. Step 2: Convert to fraction form
    28,696.28/42,954.24 = 18,129.65/x
  3. Step 3: Cross multiply
    28,696.28x = 42,954.24 × 18,129.65
  4. Step 4: Simplify right side
    28,696.28x = 778,745,337.22
  5. Step 5: Solve for x
    x = 778,745,337.22/28,696.28
  6. Step 6: Final answer
    x = 27,137.50

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1.5x scale

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.