Home / 15,287.38-21,096.55-9,319.05

Finding the Fourth Proportional to 15,287.38, 21,096.55 and 9,319.05

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Solution

The fourth proportional to 15,287.38, 21,096.55 and 9,319.05 is: 12,860.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,287.38 : 21,096.55 = 9,319.05 : x
  2. Step 2: Convert to fraction form
    15,287.38/21,096.55 = 9,319.05/x
  3. Step 3: Cross multiply
    15,287.38x = 21,096.55 × 9,319.05
  4. Step 4: Simplify right side
    15,287.38x = 196,599,815.93
  5. Step 5: Solve for x
    x = 196,599,815.93/15,287.38
  6. Step 6: Final answer
    x = 12,860.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.