Home / 12,571.20-18,856.80-9,266.40

Finding the Fourth Proportional to 12,571.20, 18,856.80 and 9,266.40

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Solution

The fourth proportional to 12,571.20, 18,856.80 and 9,266.40 is: 13,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,571.20 : 18,856.80 = 9,266.40 : x
  2. Step 2: Convert to fraction form
    12,571.20/18,856.80 = 9,266.40/x
  3. Step 3: Cross multiply
    12,571.20x = 18,856.80 × 9,266.40
  4. Step 4: Simplify right side
    12,571.20x = 174,734,651.52
  5. Step 5: Solve for x
    x = 174,734,651.52/12,571.20
  6. Step 6: Final answer
    x = 13,899.60

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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.