Home / 20,980,079.43-28,742,811.35-20,193,751.75

Finding the Fourth Proportional to 20,980,079.43, 28,742,811.35 and 20,193,751.75

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Solution

The fourth proportional to 20,980,079.43, 28,742,811.35 and 20,193,751.75 is: 27,665,538.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,980,079.43 : 28,742,811.35 = 20,193,751.75 : x
  2. Step 2: Convert to fraction form
    20,980,079.43/28,742,811.35 = 20,193,751.75/x
  3. Step 3: Cross multiply
    20,980,079.43x = 28,742,811.35 × 20,193,751.75
  4. Step 4: Simplify right side
    20,980,079.43x = 580,425,196,799,195.75
  5. Step 5: Solve for x
    x = 580,425,196,799,195.75/20,980,079.43
  6. Step 6: Final answer
    x = 27,665,538.58

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.