Home / 15,880.42-21,941.31-12,548.80

Finding the Fourth Proportional to 15,880.42, 21,941.31 and 12,548.80

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Solution

The fourth proportional to 15,880.42, 21,941.31 and 12,548.80 is: 17,338.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,880.42 : 21,941.31 = 12,548.80 : x
  2. Step 2: Convert to fraction form
    15,880.42/21,941.31 = 12,548.80/x
  3. Step 3: Cross multiply
    15,880.42x = 21,941.31 × 12,548.80
  4. Step 4: Simplify right side
    15,880.42x = 275,337,110.93
  5. Step 5: Solve for x
    x = 275,337,110.93/15,880.42
  6. Step 6: Final answer
    x = 17,338.15

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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.