Home / 15,243.71-21,036.69-8,529.28

Finding the Fourth Proportional to 15,243.71, 21,036.69 and 8,529.28

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Solution

The fourth proportional to 15,243.71, 21,036.69 and 8,529.28 is: 11,770.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,243.71 : 21,036.69 = 8,529.28 : x
  2. Step 2: Convert to fraction form
    15,243.71/21,036.69 = 8,529.28/x
  3. Step 3: Cross multiply
    15,243.71x = 21,036.69 × 8,529.28
  4. Step 4: Simplify right side
    15,243.71x = 179,427,766.69
  5. Step 5: Solve for x
    x = 179,427,766.69/15,243.71
  6. Step 6: Final answer
    x = 11,770.61

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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.