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Finding the Fourth Proportional to 14,685,145.20, 21,984,172.20 and 10,915,340.40

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Solution

The fourth proportional to 14,685,145.20, 21,984,172.20 and 10,915,340.40 is: 16,340,643.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,685,145.20 : 21,984,172.20 = 10,915,340.40 : x
  2. Step 2: Convert to fraction form
    14,685,145.20/21,984,172.20 = 10,915,340.40/x
  3. Step 3: Cross multiply
    14,685,145.20x = 21,984,172.20 × 10,915,340.40
  4. Step 4: Simplify right side
    14,685,145.20x = 239,964,722,975,216.88
  5. Step 5: Solve for x
    x = 239,964,722,975,216.88/14,685,145.20
  6. Step 6: Final answer
    x = 16,340,643.54

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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.