Home / 28,440.06-42,668.30-8,721.54

Finding the Fourth Proportional to 28,440.06, 42,668.30 and 8,721.54

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Solution

The fourth proportional to 28,440.06, 42,668.30 and 8,721.54 is: 13,084.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,440.06 : 42,668.30 = 8,721.54 : x
  2. Step 2: Convert to fraction form
    28,440.06/42,668.30 = 8,721.54/x
  3. Step 3: Cross multiply
    28,440.06x = 42,668.30 × 8,721.54
  4. Step 4: Simplify right side
    28,440.06x = 372,133,285.18
  5. Step 5: Solve for x
    x = 372,133,285.18/28,440.06
  6. Step 6: Final answer
    x = 13,084.83

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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.