Home / 18,390.72-25,379.46-10,007.22

Finding the Fourth Proportional to 18,390.72, 25,379.46 and 10,007.22

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Solution

The fourth proportional to 18,390.72, 25,379.46 and 10,007.22 is: 13,810.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.72 : 25,379.46 = 10,007.22 : x
  2. Step 2: Convert to fraction form
    18,390.72/25,379.46 = 10,007.22/x
  3. Step 3: Cross multiply
    18,390.72x = 25,379.46 × 10,007.22
  4. Step 4: Simplify right side
    18,390.72x = 253,977,839.70
  5. Step 5: Solve for x
    x = 253,977,839.70/18,390.72
  6. Step 6: Final answer
    x = 13,810.11

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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.