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Finding the Fourth Proportional to 28,287.93, 42,437.09 and 9,313.65

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Solution

The fourth proportional to 28,287.93, 42,437.09 and 9,313.65 is: 13,972.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,287.93 : 42,437.09 = 9,313.65 : x
  2. Step 2: Convert to fraction form
    28,287.93/42,437.09 = 9,313.65/x
  3. Step 3: Cross multiply
    28,287.93x = 42,437.09 × 9,313.65
  4. Step 4: Simplify right side
    28,287.93x = 395,244,050.62
  5. Step 5: Solve for x
    x = 395,244,050.62/28,287.93
  6. Step 6: Final answer
    x = 13,972.18

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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.