Home / 15,326.28-21,150.18-9,357.12

Finding the Fourth Proportional to 15,326.28, 21,150.18 and 9,357.12

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Solution

The fourth proportional to 15,326.28, 21,150.18 and 9,357.12 is: 12,912.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,326.28 : 21,150.18 = 9,357.12 : x
  2. Step 2: Convert to fraction form
    15,326.28/21,150.18 = 9,357.12/x
  3. Step 3: Cross multiply
    15,326.28x = 21,150.18 × 9,357.12
  4. Step 4: Simplify right side
    15,326.28x = 197,904,772.28
  5. Step 5: Solve for x
    x = 197,904,772.28/15,326.28
  6. Step 6: Final answer
    x = 12,912.77

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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.