Home / 12,619,729.60-18,904,711.20-7,555,998.40

Finding the Fourth Proportional to 12,619,729.60, 18,904,711.20 and 7,555,998.40

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Solution

The fourth proportional to 12,619,729.60, 18,904,711.20 and 7,555,998.40 is: 11,319,098.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619,729.60 : 18,904,711.20 = 7,555,998.40 : x
  2. Step 2: Convert to fraction form
    12,619,729.60/18,904,711.20 = 7,555,998.40/x
  3. Step 3: Cross multiply
    12,619,729.60x = 18,904,711.20 × 7,555,998.40
  4. Step 4: Simplify right side
    12,619,729.60x = 142,843,967,579,662.09
  5. Step 5: Solve for x
    x = 142,843,967,579,662.09/12,619,729.60
  6. Step 6: Final answer
    x = 11,319,098.91

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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.