Home / 53,763.95-80,678.36-18,728.21

Finding the Fourth Proportional to 53,763.95, 80,678.36 and 18,728.21

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Solution

The fourth proportional to 53,763.95, 80,678.36 and 18,728.21 is: 28,103.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,763.95 : 80,678.36 = 18,728.21 : x
  2. Step 2: Convert to fraction form
    53,763.95/80,678.36 = 18,728.21/x
  3. Step 3: Cross multiply
    53,763.95x = 80,678.36 × 18,728.21
  4. Step 4: Simplify right side
    53,763.95x = 1,510,961,517.05
  5. Step 5: Solve for x
    x = 1,510,961,517.05/53,763.95
  6. Step 6: Final answer
    x = 28,103.62

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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.