Home / 15,369.43-21,204.55-9,321.52

Finding the Fourth Proportional to 15,369.43, 21,204.55 and 9,321.52

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Solution

The fourth proportional to 15,369.43, 21,204.55 and 9,321.52 is: 12,860.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,369.43 : 21,204.55 = 9,321.52 : x
  2. Step 2: Convert to fraction form
    15,369.43/21,204.55 = 9,321.52/x
  3. Step 3: Cross multiply
    15,369.43x = 21,204.55 × 9,321.52
  4. Step 4: Simplify right side
    15,369.43x = 197,658,636.92
  5. Step 5: Solve for x
    x = 197,658,636.92/15,369.43
  6. Step 6: Final answer
    x = 12,860.51

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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.