Home / 21,062,979.60-31,594,469.40-12,105,027.60

Finding the Fourth Proportional to 21,062,979.60, 31,594,469.40 and 12,105,027.60

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Solution

The fourth proportional to 21,062,979.60, 31,594,469.40 and 12,105,027.60 is: 18,157,541.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062,979.60 : 31,594,469.40 = 12,105,027.60 : x
  2. Step 2: Convert to fraction form
    21,062,979.60/31,594,469.40 = 12,105,027.60/x
  3. Step 3: Cross multiply
    21,062,979.60x = 31,594,469.40 × 12,105,027.60
  4. Step 4: Simplify right side
    21,062,979.60x = 382,451,924,094,355.44
  5. Step 5: Solve for x
    x = 382,451,924,094,355.44/21,062,979.60
  6. Step 6: Final answer
    x = 18,157,541.40

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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.