Home / 15,334.12-21,160.81-9,365.78

Finding the Fourth Proportional to 15,334.12, 21,160.81 and 9,365.78

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Solution

The fourth proportional to 15,334.12, 21,160.81 and 9,365.78 is: 12,924.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,334.12 : 21,160.81 = 9,365.78 : x
  2. Step 2: Convert to fraction form
    15,334.12/21,160.81 = 9,365.78/x
  3. Step 3: Cross multiply
    15,334.12x = 21,160.81 × 9,365.78
  4. Step 4: Simplify right side
    15,334.12x = 198,187,549.72
  5. Step 5: Solve for x
    x = 198,187,549.72/15,334.12
  6. Step 6: Final answer
    x = 12,924.61

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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.