Home / 28,543,661.88-39,390,273.64-15,490,917.69

Finding the Fourth Proportional to 28,543,661.88, 39,390,273.64 and 15,490,917.69

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Solution

The fourth proportional to 28,543,661.88, 39,390,273.64 and 15,490,917.69 is: 21,377,477.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543,661.88 : 39,390,273.64 = 15,490,917.69 : x
  2. Step 2: Convert to fraction form
    28,543,661.88/39,390,273.64 = 15,490,917.69/x
  3. Step 3: Cross multiply
    28,543,661.88x = 39,390,273.64 × 15,490,917.69
  4. Step 4: Simplify right side
    28,543,661.88x = 610,191,486,743,816.62
  5. Step 5: Solve for x
    x = 610,191,486,743,816.62/28,543,661.88
  6. Step 6: Final answer
    x = 21,377,477.40

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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.