Home / 22,911.12-31,617-12,840.24

Finding the Fourth Proportional to 22,911.12, 31,617 and 12,840.24

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Solution

The fourth proportional to 22,911.12, 31,617 and 12,840.24 is: 17,719.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,911.12 : 31,617 = 12,840.24 : x
  2. Step 2: Convert to fraction form
    22,911.12/31,617 = 12,840.24/x
  3. Step 3: Cross multiply
    22,911.12x = 31,617 × 12,840.24
  4. Step 4: Simplify right side
    22,911.12x = 405,969,868.08
  5. Step 5: Solve for x
    x = 405,969,868.08/22,911.12
  6. Step 6: Final answer
    x = 17,719.34

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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.