Home / 18,851.94-28,280.34-10,074.78

Finding the Fourth Proportional to 18,851.94, 28,280.34 and 10,074.78

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Solution

The fourth proportional to 18,851.94, 28,280.34 and 10,074.78 is: 15,113.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,851.94 : 28,280.34 = 10,074.78 : x
  2. Step 2: Convert to fraction form
    18,851.94/28,280.34 = 10,074.78/x
  3. Step 3: Cross multiply
    18,851.94x = 28,280.34 × 10,074.78
  4. Step 4: Simplify right side
    18,851.94x = 284,918,203.83
  5. Step 5: Solve for x
    x = 284,918,203.83/18,851.94
  6. Step 6: Final answer
    x = 15,113.47

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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.