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Finding the Fourth Proportional to 22,728.33, 31,365.02 and 12,656.90

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Solution

The fourth proportional to 22,728.33, 31,365.02 and 12,656.90 is: 17,466.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,728.33 : 31,365.02 = 12,656.90 : x
  2. Step 2: Convert to fraction form
    22,728.33/31,365.02 = 12,656.90/x
  3. Step 3: Cross multiply
    22,728.33x = 31,365.02 × 12,656.90
  4. Step 4: Simplify right side
    22,728.33x = 396,983,701.53
  5. Step 5: Solve for x
    x = 396,983,701.53/22,728.33
  6. Step 6: Final answer
    x = 17,466.47

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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.