Home / 28,388.10-42,591.27-8,668.65

Finding the Fourth Proportional to 28,388.10, 42,591.27 and 8,668.65

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Solution

The fourth proportional to 28,388.10, 42,591.27 and 8,668.65 is: 13,005.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.10 : 42,591.27 = 8,668.65 : x
  2. Step 2: Convert to fraction form
    28,388.10/42,591.27 = 8,668.65/x
  3. Step 3: Cross multiply
    28,388.10x = 42,591.27 × 8,668.65
  4. Step 4: Simplify right side
    28,388.10x = 369,208,812.69
  5. Step 5: Solve for x
    x = 369,208,812.69/28,388.10
  6. Step 6: Final answer
    x = 13,005.76

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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.