Home / 9,581.65-13,222.66-5,389.90

Finding the Fourth Proportional to 9,581.65, 13,222.66 and 5,389.90

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Solution

The fourth proportional to 9,581.65, 13,222.66 and 5,389.90 is: 7,438.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,581.65 : 13,222.66 = 5,389.90 : x
  2. Step 2: Convert to fraction form
    9,581.65/13,222.66 = 5,389.90/x
  3. Step 3: Cross multiply
    9,581.65x = 13,222.66 × 5,389.90
  4. Step 4: Simplify right side
    9,581.65x = 71,268,801.66
  5. Step 5: Solve for x
    x = 71,268,801.66/9,581.65
  6. Step 6: Final answer
    x = 7,438.05

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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.