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Finding the Fourth Proportional to 15,978,039.60, 23,967,059.40 and 9,919,612.20

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Solution

The fourth proportional to 15,978,039.60, 23,967,059.40 and 9,919,612.20 is: 14,879,418.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,978,039.60 : 23,967,059.40 = 9,919,612.20 : x
  2. Step 2: Convert to fraction form
    15,978,039.60/23,967,059.40 = 9,919,612.20/x
  3. Step 3: Cross multiply
    15,978,039.60x = 23,967,059.40 × 9,919,612.20
  4. Step 4: Simplify right side
    15,978,039.60x = 237,743,934,822,364.66
  5. Step 5: Solve for x
    x = 237,743,934,822,364.66/15,978,039.60
  6. Step 6: Final answer
    x = 14,879,418.30

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1.5x scale

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.