Home / 22,912.05-31,618.41-12,840.92

Finding the Fourth Proportional to 22,912.05, 31,618.41 and 12,840.92

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Solution

The fourth proportional to 22,912.05, 31,618.41 and 12,840.92 is: 17,720.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,912.05 : 31,618.41 = 12,840.92 : x
  2. Step 2: Convert to fraction form
    22,912.05/31,618.41 = 12,840.92/x
  3. Step 3: Cross multiply
    22,912.05x = 31,618.41 × 12,840.92
  4. Step 4: Simplify right side
    22,912.05x = 406,009,473.34
  5. Step 5: Solve for x
    x = 406,009,473.34/22,912.05
  6. Step 6: Final answer
    x = 17,720.35

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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.