Home / 15,850.04-21,872.30-9,135.86

Finding the Fourth Proportional to 15,850.04, 21,872.30 and 9,135.86

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Solution

The fourth proportional to 15,850.04, 21,872.30 and 9,135.86 is: 12,607.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,850.04 : 21,872.30 = 9,135.86 : x
  2. Step 2: Convert to fraction form
    15,850.04/21,872.30 = 9,135.86/x
  3. Step 3: Cross multiply
    15,850.04x = 21,872.30 × 9,135.86
  4. Step 4: Simplify right side
    15,850.04x = 199,822,270.68
  5. Step 5: Solve for x
    x = 199,822,270.68/15,850.04
  6. Step 6: Final answer
    x = 12,607.05

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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.