Home / 15,324.72-21,140.16-10,290.69

Finding the Fourth Proportional to 15,324.72, 21,140.16 and 10,290.69

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Solution

The fourth proportional to 15,324.72, 21,140.16 and 10,290.69 is: 14,195.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,324.72 : 21,140.16 = 10,290.69 : x
  2. Step 2: Convert to fraction form
    15,324.72/21,140.16 = 10,290.69/x
  3. Step 3: Cross multiply
    15,324.72x = 21,140.16 × 10,290.69
  4. Step 4: Simplify right side
    15,324.72x = 217,546,833.11
  5. Step 5: Solve for x
    x = 217,546,833.11/15,324.72
  6. Step 6: Final answer
    x = 14,195.81

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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.