Home / 21,004,416.62-28,985,378.78-11,585,580.80

Finding the Fourth Proportional to 21,004,416.62, 28,985,378.78 and 11,585,580.80

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Solution

The fourth proportional to 21,004,416.62, 28,985,378.78 and 11,585,580.80 is: 15,987,706.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,004,416.62 : 28,985,378.78 = 11,585,580.80 : x
  2. Step 2: Convert to fraction form
    21,004,416.62/28,985,378.78 = 11,585,580.80/x
  3. Step 3: Cross multiply
    21,004,416.62x = 28,985,378.78 × 11,585,580.80
  4. Step 4: Simplify right side
    21,004,416.62x = 335,812,447,671,440.62
  5. Step 5: Solve for x
    x = 335,812,447,671,440.62/21,004,416.62
  6. Step 6: Final answer
    x = 15,987,706.48

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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.