Home / 26,185.60-39,278.40-18,812.80

Finding the Fourth Proportional to 26,185.60, 39,278.40 and 18,812.80

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Solution

The fourth proportional to 26,185.60, 39,278.40 and 18,812.80 is: 28,219.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,185.60 : 39,278.40 = 18,812.80 : x
  2. Step 2: Convert to fraction form
    26,185.60/39,278.40 = 18,812.80/x
  3. Step 3: Cross multiply
    26,185.60x = 39,278.40 × 18,812.80
  4. Step 4: Simplify right side
    26,185.60x = 738,936,683.52
  5. Step 5: Solve for x
    x = 738,936,683.52/26,185.60
  6. Step 6: Final answer
    x = 28,219.20

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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.