Home / 15,326.40-21,150.36-9,356.88

Finding the Fourth Proportional to 15,326.40, 21,150.36 and 9,356.88

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Solution

The fourth proportional to 15,326.40, 21,150.36 and 9,356.88 is: 12,912.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,326.40 : 21,150.36 = 9,356.88 : x
  2. Step 2: Convert to fraction form
    15,326.40/21,150.36 = 9,356.88/x
  3. Step 3: Cross multiply
    15,326.40x = 21,150.36 × 9,356.88
  4. Step 4: Simplify right side
    15,326.40x = 197,901,380.48
  5. Step 5: Solve for x
    x = 197,901,380.48/15,326.40
  6. Step 6: Final answer
    x = 12,912.45

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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.