Home / 19,187.55-28,719.77-10,280.66

Finding the Fourth Proportional to 19,187.55, 28,719.77 and 10,280.66

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Solution

The fourth proportional to 19,187.55, 28,719.77 and 10,280.66 is: 15,388.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,187.55 : 28,719.77 = 10,280.66 : x
  2. Step 2: Convert to fraction form
    19,187.55/28,719.77 = 10,280.66/x
  3. Step 3: Cross multiply
    19,187.55x = 28,719.77 × 10,280.66
  4. Step 4: Simplify right side
    19,187.55x = 295,257,995.65
  5. Step 5: Solve for x
    x = 295,257,995.65/19,187.55
  6. Step 6: Final answer
    x = 15,388.00

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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.