Home / 13,449.90-20,172.45-8,510.70

Finding the Fourth Proportional to 13,449.90, 20,172.45 and 8,510.70

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Solution

The fourth proportional to 13,449.90, 20,172.45 and 8,510.70 is: 12,764.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.90 : 20,172.45 = 8,510.70 : x
  2. Step 2: Convert to fraction form
    13,449.90/20,172.45 = 8,510.70/x
  3. Step 3: Cross multiply
    13,449.90x = 20,172.45 × 8,510.70
  4. Step 4: Simplify right side
    13,449.90x = 171,681,670.22
  5. Step 5: Solve for x
    x = 171,681,670.22/13,449.90
  6. Step 6: Final answer
    x = 12,764.53

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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.