Home / 15,311,308.88-21,130,084.78-8,786,131.94

Finding the Fourth Proportional to 15,311,308.88, 21,130,084.78 and 8,786,131.94

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Solution

The fourth proportional to 15,311,308.88, 21,130,084.78 and 8,786,131.94 is: 12,125,136.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311,308.88 : 21,130,084.78 = 8,786,131.94 : x
  2. Step 2: Convert to fraction form
    15,311,308.88/21,130,084.78 = 8,786,131.94/x
  3. Step 3: Cross multiply
    15,311,308.88x = 21,130,084.78 × 8,786,131.94
  4. Step 4: Simplify right side
    15,311,308.88x = 185,651,712,780,465.88
  5. Step 5: Solve for x
    x = 185,651,712,780,465.88/15,311,308.88
  6. Step 6: Final answer
    x = 12,125,136.67

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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.