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Finding the Fourth Proportional to 10,995,981.20, 16,465,978.20 and 10,492,096.40

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Solution

The fourth proportional to 10,995,981.20, 16,465,978.20 and 10,492,096.40 is: 15,711,433.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,995,981.20 : 16,465,978.20 = 10,492,096.40 : x
  2. Step 2: Convert to fraction form
    10,995,981.20/16,465,978.20 = 10,492,096.40/x
  3. Step 3: Cross multiply
    10,995,981.20x = 16,465,978.20 × 10,492,096.40
  4. Step 4: Simplify right side
    10,995,981.20x = 172,762,630,594,698.47
  5. Step 5: Solve for x
    x = 172,762,630,594,698.47/10,995,981.20
  6. Step 6: Final answer
    x = 15,711,433.79

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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.