Home / 18,382.09-25,365.80-10,425.05

Finding the Fourth Proportional to 18,382.09, 25,365.80 and 10,425.05

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Solution

The fourth proportional to 18,382.09, 25,365.80 and 10,425.05 is: 14,385.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,382.09 : 25,365.80 = 10,425.05 : x
  2. Step 2: Convert to fraction form
    18,382.09/25,365.80 = 10,425.05/x
  3. Step 3: Cross multiply
    18,382.09x = 25,365.80 × 10,425.05
  4. Step 4: Simplify right side
    18,382.09x = 264,439,681.16
  5. Step 5: Solve for x
    x = 264,439,681.16/18,382.09
  6. Step 6: Final answer
    x = 14,385.73

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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.