Home / 15,880.24-21,864.78-12,091.36

Finding the Fourth Proportional to 15,880.24, 21,864.78 and 12,091.36

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Solution

The fourth proportional to 15,880.24, 21,864.78 and 12,091.36 is: 16,648.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,880.24 : 21,864.78 = 12,091.36 : x
  2. Step 2: Convert to fraction form
    15,880.24/21,864.78 = 12,091.36/x
  3. Step 3: Cross multiply
    15,880.24x = 21,864.78 × 12,091.36
  4. Step 4: Simplify right side
    15,880.24x = 264,374,926.30
  5. Step 5: Solve for x
    x = 264,374,926.30/15,880.24
  6. Step 6: Final answer
    x = 16,648.04

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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.