Home / 15,399.81-21,251.70-8,326.26

Finding the Fourth Proportional to 15,399.81, 21,251.70 and 8,326.26

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Solution

The fourth proportional to 15,399.81, 21,251.70 and 8,326.26 is: 11,490.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,399.81 : 21,251.70 = 8,326.26 : x
  2. Step 2: Convert to fraction form
    15,399.81/21,251.70 = 8,326.26/x
  3. Step 3: Cross multiply
    15,399.81x = 21,251.70 × 8,326.26
  4. Step 4: Simplify right side
    15,399.81x = 176,947,179.64
  5. Step 5: Solve for x
    x = 176,947,179.64/15,399.81
  6. Step 6: Final answer
    x = 11,490.22

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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.