Home / 18,405.11-25,399.17-10,447.47

Finding the Fourth Proportional to 18,405.11, 25,399.17 and 10,447.47

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Solution

The fourth proportional to 18,405.11, 25,399.17 and 10,447.47 is: 14,417.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,405.11 : 25,399.17 = 10,447.47 : x
  2. Step 2: Convert to fraction form
    18,405.11/25,399.17 = 10,447.47/x
  3. Step 3: Cross multiply
    18,405.11x = 25,399.17 × 10,447.47
  4. Step 4: Simplify right side
    18,405.11x = 265,356,939.60
  5. Step 5: Solve for x
    x = 265,356,939.60/18,405.11
  6. Step 6: Final answer
    x = 14,417.57

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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.