Home / 22,719.64-31,362.78-15,271.96

Finding the Fourth Proportional to 22,719.64, 31,362.78 and 15,271.96

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Solution

The fourth proportional to 22,719.64, 31,362.78 and 15,271.96 is: 21,081.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,719.64 : 31,362.78 = 15,271.96 : x
  2. Step 2: Convert to fraction form
    22,719.64/31,362.78 = 15,271.96/x
  3. Step 3: Cross multiply
    22,719.64x = 31,362.78 × 15,271.96
  4. Step 4: Simplify right side
    22,719.64x = 478,971,121.65
  5. Step 5: Solve for x
    x = 478,971,121.65/22,719.64
  6. Step 6: Final answer
    x = 21,081.81

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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.