Home / 22,405.86-30,923.10-12,975.03

Finding the Fourth Proportional to 22,405.86, 30,923.10 and 12,975.03

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Solution

The fourth proportional to 22,405.86, 30,923.10 and 12,975.03 is: 17,907.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,405.86 : 30,923.10 = 12,975.03 : x
  2. Step 2: Convert to fraction form
    22,405.86/30,923.10 = 12,975.03/x
  3. Step 3: Cross multiply
    22,405.86x = 30,923.10 × 12,975.03
  4. Step 4: Simplify right side
    22,405.86x = 401,228,150.19
  5. Step 5: Solve for x
    x = 401,228,150.19/22,405.86
  6. Step 6: Final answer
    x = 17,907.29

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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.