Home / 22,911.67-31,617.87-12,840.55

Finding the Fourth Proportional to 22,911.67, 31,617.87 and 12,840.55

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Solution

The fourth proportional to 22,911.67, 31,617.87 and 12,840.55 is: 17,719.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,911.67 : 31,617.87 = 12,840.55 : x
  2. Step 2: Convert to fraction form
    22,911.67/31,617.87 = 12,840.55/x
  3. Step 3: Cross multiply
    22,911.67x = 31,617.87 × 12,840.55
  4. Step 4: Simplify right side
    22,911.67x = 405,990,840.63
  5. Step 5: Solve for x
    x = 405,990,840.63/22,911.67
  6. Step 6: Final answer
    x = 17,719.83

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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.