Home / 15,686,879.57-21,648,419.51-8,717,850.86

Finding the Fourth Proportional to 15,686,879.57, 21,648,419.51 and 8,717,850.86

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Solution

The fourth proportional to 15,686,879.57, 21,648,419.51 and 8,717,850.86 is: 12,030,926.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686,879.57 : 21,648,419.51 = 8,717,850.86 : x
  2. Step 2: Convert to fraction form
    15,686,879.57/21,648,419.51 = 8,717,850.86/x
  3. Step 3: Cross multiply
    15,686,879.57x = 21,648,419.51 × 8,717,850.86
  4. Step 4: Simplify right side
    15,686,879.57x = 188,727,692,491,062.94
  5. Step 5: Solve for x
    x = 188,727,692,491,062.94/15,686,879.57
  6. Step 6: Final answer
    x = 12,030,926.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.