Home / 22,721.65-31,355.58-13,162.84

Finding the Fourth Proportional to 22,721.65, 31,355.58 and 13,162.84

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Solution

The fourth proportional to 22,721.65, 31,355.58 and 13,162.84 is: 18,164.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,721.65 : 31,355.58 = 13,162.84 : x
  2. Step 2: Convert to fraction form
    22,721.65/31,355.58 = 13,162.84/x
  3. Step 3: Cross multiply
    22,721.65x = 31,355.58 × 13,162.84
  4. Step 4: Simplify right side
    22,721.65x = 412,728,482.65
  5. Step 5: Solve for x
    x = 412,728,482.65/22,721.65
  6. Step 6: Final answer
    x = 18,164.55

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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.