Home / 10,187.90-15,280.55-3,943.64

Finding the Fourth Proportional to 10,187.90, 15,280.55 and 3,943.64

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Solution

The fourth proportional to 10,187.90, 15,280.55 and 3,943.64 is: 5,914.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,187.90 : 15,280.55 = 3,943.64 : x
  2. Step 2: Convert to fraction form
    10,187.90/15,280.55 = 3,943.64/x
  3. Step 3: Cross multiply
    10,187.90x = 15,280.55 × 3,943.64
  4. Step 4: Simplify right side
    10,187.90x = 60,260,935.52
  5. Step 5: Solve for x
    x = 60,260,935.52/10,187.90
  6. Step 6: Final answer
    x = 5,914.95

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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.