Home / 15,690,575.89-21,632,193.15-12,889,175.94

Finding the Fourth Proportional to 15,690,575.89, 21,632,193.15 and 12,889,175.94

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Solution

The fourth proportional to 15,690,575.89, 21,632,193.15 and 12,889,175.94 is: 17,769,975.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690,575.89 : 21,632,193.15 = 12,889,175.94 : x
  2. Step 2: Convert to fraction form
    15,690,575.89/21,632,193.15 = 12,889,175.94/x
  3. Step 3: Cross multiply
    15,690,575.89x = 21,632,193.15 × 12,889,175.94
  4. Step 4: Simplify right side
    15,690,575.89x = 278,821,143,478,412.78
  5. Step 5: Solve for x
    x = 278,821,143,478,412.78/15,690,575.89
  6. Step 6: Final answer
    x = 17,769,975.14

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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.