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Finding the Fourth Proportional to 15,978,049.60, 23,967,074.40 and 9,919,622.20

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Solution

The fourth proportional to 15,978,049.60, 23,967,074.40 and 9,919,622.20 is: 14,879,433.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978,049.60 : 23,967,074.40 = 9,919,622.20 : x
  2. Step 2: Convert to fraction form
    15,978,049.60/23,967,074.40 = 9,919,622.20/x
  3. Step 3: Cross multiply
    15,978,049.60x = 23,967,074.40 × 9,919,622.20
  4. Step 4: Simplify right side
    15,978,049.60x = 237,744,323,287,291.66
  5. Step 5: Solve for x
    x = 237,744,323,287,291.66/15,978,049.60
  6. Step 6: Final answer
    x = 14,879,433.30

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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.