Home / 18,724.78-28,085.64-5,577.15

Finding the Fourth Proportional to 18,724.78, 28,085.64 and 5,577.15

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Solution

The fourth proportional to 18,724.78, 28,085.64 and 5,577.15 is: 8,365.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724.78 : 28,085.64 = 5,577.15 : x
  2. Step 2: Convert to fraction form
    18,724.78/28,085.64 = 5,577.15/x
  3. Step 3: Cross multiply
    18,724.78x = 28,085.64 × 5,577.15
  4. Step 4: Simplify right side
    18,724.78x = 156,637,911.53
  5. Step 5: Solve for x
    x = 156,637,911.53/18,724.78
  6. Step 6: Final answer
    x = 8,365.27

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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.