Home / 15,393.67-21,243.29-8,320.07

Finding the Fourth Proportional to 15,393.67, 21,243.29 and 8,320.07

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Solution

The fourth proportional to 15,393.67, 21,243.29 and 8,320.07 is: 11,481.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.67 : 21,243.29 = 8,320.07 : x
  2. Step 2: Convert to fraction form
    15,393.67/21,243.29 = 8,320.07/x
  3. Step 3: Cross multiply
    15,393.67x = 21,243.29 × 8,320.07
  4. Step 4: Simplify right side
    15,393.67x = 176,745,671.34
  5. Step 5: Solve for x
    x = 176,745,671.34/15,393.67
  6. Step 6: Final answer
    x = 11,481.71

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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.