Home / 12,479,191.36-18,706,828.80-5,280,823.04

Finding the Fourth Proportional to 12,479,191.36, 18,706,828.80 and 5,280,823.04

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Solution

The fourth proportional to 12,479,191.36, 18,706,828.80 and 5,280,823.04 is: 7,916,174.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,479,191.36 : 18,706,828.80 = 5,280,823.04 : x
  2. Step 2: Convert to fraction form
    12,479,191.36/18,706,828.80 = 5,280,823.04/x
  3. Step 3: Cross multiply
    12,479,191.36x = 18,706,828.80 × 5,280,823.04
  4. Step 4: Simplify right side
    12,479,191.36x = 98,787,452,532,375.56
  5. Step 5: Solve for x
    x = 98,787,452,532,375.56/12,479,191.36
  6. Step 6: Final answer
    x = 7,916,174.19

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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.