Home / 20,102,270.72-30,077,314.19-11,909,311.50

Finding the Fourth Proportional to 20,102,270.72, 30,077,314.19 and 11,909,311.50

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Solution

The fourth proportional to 20,102,270.72, 30,077,314.19 and 11,909,311.50 is: 17,818,887.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102,270.72 : 30,077,314.19 = 11,909,311.50 : x
  2. Step 2: Convert to fraction form
    20,102,270.72/30,077,314.19 = 11,909,311.50/x
  3. Step 3: Cross multiply
    20,102,270.72x = 30,077,314.19 × 11,909,311.50
  4. Step 4: Simplify right side
    20,102,270.72x = 358,200,103,621,693.62
  5. Step 5: Solve for x
    x = 358,200,103,621,693.62/20,102,270.72
  6. Step 6: Final answer
    x = 17,818,887.66

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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.