Home / 13,581.65-20,376.13-5,680.01

Finding the Fourth Proportional to 13,581.65, 20,376.13 and 5,680.01

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Solution

The fourth proportional to 13,581.65, 20,376.13 and 5,680.01 is: 8,521.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,581.65 : 20,376.13 = 5,680.01 : x
  2. Step 2: Convert to fraction form
    13,581.65/20,376.13 = 5,680.01/x
  3. Step 3: Cross multiply
    13,581.65x = 20,376.13 × 5,680.01
  4. Step 4: Simplify right side
    13,581.65x = 115,736,569.15
  5. Step 5: Solve for x
    x = 115,736,569.15/13,581.65
  6. Step 6: Final answer
    x = 8,521.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.