Home / 28,969.92-43,433.28-18,437.76

Finding the Fourth Proportional to 28,969.92, 43,433.28 and 18,437.76

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Solution

The fourth proportional to 28,969.92, 43,433.28 and 18,437.76 is: 27,642.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,969.92 : 43,433.28 = 18,437.76 : x
  2. Step 2: Convert to fraction form
    28,969.92/43,433.28 = 18,437.76/x
  3. Step 3: Cross multiply
    28,969.92x = 43,433.28 × 18,437.76
  4. Step 4: Simplify right side
    28,969.92x = 800,812,392.65
  5. Step 5: Solve for x
    x = 800,812,392.65/28,969.92
  6. Step 6: Final answer
    x = 27,642.89

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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.