Home / 18,778.47-25,914.70-10,280.95

Finding the Fourth Proportional to 18,778.47, 25,914.70 and 10,280.95

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Solution

The fourth proportional to 18,778.47, 25,914.70 and 10,280.95 is: 14,187.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.47 : 25,914.70 = 10,280.95 : x
  2. Step 2: Convert to fraction form
    18,778.47/25,914.70 = 10,280.95/x
  3. Step 3: Cross multiply
    18,778.47x = 25,914.70 × 10,280.95
  4. Step 4: Simplify right side
    18,778.47x = 266,427,712.54
  5. Step 5: Solve for x
    x = 266,427,712.54/18,778.47
  6. Step 6: Final answer
    x = 14,187.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.