Home / 15,324.96-21,143.52-9,658.20

Finding the Fourth Proportional to 15,324.96, 21,143.52 and 9,658.20

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Solution

The fourth proportional to 15,324.96, 21,143.52 and 9,658.20 is: 13,325.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,324.96 : 21,143.52 = 9,658.20 : x
  2. Step 2: Convert to fraction form
    15,324.96/21,143.52 = 9,658.20/x
  3. Step 3: Cross multiply
    15,324.96x = 21,143.52 × 9,658.20
  4. Step 4: Simplify right side
    15,324.96x = 204,208,344.86
  5. Step 5: Solve for x
    x = 204,208,344.86/15,324.96
  6. Step 6: Final answer
    x = 13,325.21

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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.