Home / 15,955.20-23,932.80-12,650.40

Finding the Fourth Proportional to 15,955.20, 23,932.80 and 12,650.40

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Solution

The fourth proportional to 15,955.20, 23,932.80 and 12,650.40 is: 18,975.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,955.20 : 23,932.80 = 12,650.40 : x
  2. Step 2: Convert to fraction form
    15,955.20/23,932.80 = 12,650.40/x
  3. Step 3: Cross multiply
    15,955.20x = 23,932.80 × 12,650.40
  4. Step 4: Simplify right side
    15,955.20x = 302,759,493.12
  5. Step 5: Solve for x
    x = 302,759,493.12/15,955.20
  6. Step 6: Final answer
    x = 18,975.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.