Home / 15,187,800.78-20,959,220.64-8,218,478.39

Finding the Fourth Proportional to 15,187,800.78, 20,959,220.64 and 8,218,478.39

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Solution

The fourth proportional to 15,187,800.78, 20,959,220.64 and 8,218,478.39 is: 11,341,530.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187,800.78 : 20,959,220.64 = 8,218,478.39 : x
  2. Step 2: Convert to fraction form
    15,187,800.78/20,959,220.64 = 8,218,478.39/x
  3. Step 3: Cross multiply
    15,187,800.78x = 20,959,220.64 × 8,218,478.39
  4. Step 4: Simplify right side
    15,187,800.78x = 172,252,901,897,318.50
  5. Step 5: Solve for x
    x = 172,252,901,897,318.50/15,187,800.78
  6. Step 6: Final answer
    x = 11,341,530.24

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1.5x scale

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.