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Finding the Fourth Proportional to 12,483,939.20, 18,697,915.20 and 10,244,451.20

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Solution

The fourth proportional to 12,483,939.20, 18,697,915.20 and 10,244,451.20 is: 15,343,704.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,483,939.20 : 18,697,915.20 = 10,244,451.20 : x
  2. Step 2: Convert to fraction form
    12,483,939.20/18,697,915.20 = 10,244,451.20/x
  3. Step 3: Cross multiply
    12,483,939.20x = 18,697,915.20 × 10,244,451.20
  4. Step 4: Simplify right side
    12,483,939.20x = 191,549,879,808,138.22
  5. Step 5: Solve for x
    x = 191,549,879,808,138.22/12,483,939.20
  6. Step 6: Final answer
    x = 15,343,704.96

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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.