Home / 22,728.42-31,365.09-13,296.78

Finding the Fourth Proportional to 22,728.42, 31,365.09 and 13,296.78

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Solution

The fourth proportional to 22,728.42, 31,365.09 and 13,296.78 is: 18,349.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,728.42 : 31,365.09 = 13,296.78 : x
  2. Step 2: Convert to fraction form
    22,728.42/31,365.09 = 13,296.78/x
  3. Step 3: Cross multiply
    22,728.42x = 31,365.09 × 13,296.78
  4. Step 4: Simplify right side
    22,728.42x = 417,054,701.41
  5. Step 5: Solve for x
    x = 417,054,701.41/22,728.42
  6. Step 6: Final answer
    x = 18,349.48

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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.