Home / 22,911.64-31,617.66-12,840.04

Finding the Fourth Proportional to 22,911.64, 31,617.66 and 12,840.04

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Solution

The fourth proportional to 22,911.64, 31,617.66 and 12,840.04 is: 17,719.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,911.64 : 31,617.66 = 12,840.04 : x
  2. Step 2: Convert to fraction form
    22,911.64/31,617.66 = 12,840.04/x
  3. Step 3: Cross multiply
    22,911.64x = 31,617.66 × 12,840.04
  4. Step 4: Simplify right side
    22,911.64x = 405,972,019.11
  5. Step 5: Solve for x
    x = 405,972,019.11/22,911.64
  6. Step 6: Final answer
    x = 17,719.03

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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.