Home / 28,440.08-42,668.31-8,721.53

Finding the Fourth Proportional to 28,440.08, 42,668.31 and 8,721.53

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Solution

The fourth proportional to 28,440.08, 42,668.31 and 8,721.53 is: 13,084.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.08 : 42,668.31 = 8,721.53 : x
  2. Step 2: Convert to fraction form
    28,440.08/42,668.31 = 8,721.53/x
  3. Step 3: Cross multiply
    28,440.08x = 42,668.31 × 8,721.53
  4. Step 4: Simplify right side
    28,440.08x = 372,132,945.71
  5. Step 5: Solve for x
    x = 372,132,945.71/28,440.08
  6. Step 6: Final answer
    x = 13,084.81

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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.