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Finding the Fourth Proportional to 15,794,811.20, 23,720,210.40 and 12,209,297.60

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Solution

The fourth proportional to 15,794,811.20, 23,720,210.40 and 12,209,297.60 is: 18,335,585.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,794,811.20 : 23,720,210.40 = 12,209,297.60 : x
  2. Step 2: Convert to fraction form
    15,794,811.20/23,720,210.40 = 12,209,297.60/x
  3. Step 3: Cross multiply
    15,794,811.20x = 23,720,210.40 × 12,209,297.60
  4. Step 4: Simplify right side
    15,794,811.20x = 289,607,107,908,215
  5. Step 5: Solve for x
    x = 289,607,107,908,215/15,794,811.20
  6. Step 6: Final answer
    x = 18,335,585.29

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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.