Home / 20,115,056.70-30,172,585.05-7,335,978.30

Finding the Fourth Proportional to 20,115,056.70, 30,172,585.05 and 7,335,978.30

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Solution

The fourth proportional to 20,115,056.70, 30,172,585.05 and 7,335,978.30 is: 11,003,967.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115,056.70 : 30,172,585.05 = 7,335,978.30 : x
  2. Step 2: Convert to fraction form
    20,115,056.70/30,172,585.05 = 7,335,978.30/x
  3. Step 3: Cross multiply
    20,115,056.70x = 30,172,585.05 × 7,335,978.30
  4. Step 4: Simplify right side
    20,115,056.70x = 221,345,429,181,704.41
  5. Step 5: Solve for x
    x = 221,345,429,181,704.41/20,115,056.70
  6. Step 6: Final answer
    x = 11,003,967.45

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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.