Home / 15,004,458.05-20,706,251.49-8,128,940.13

Finding the Fourth Proportional to 15,004,458.05, 20,706,251.49 and 8,128,940.13

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Solution

The fourth proportional to 15,004,458.05, 20,706,251.49 and 8,128,940.13 is: 11,217,991.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,004,458.05 : 20,706,251.49 = 8,128,940.13 : x
  2. Step 2: Convert to fraction form
    15,004,458.05/20,706,251.49 = 8,128,940.13/x
  3. Step 3: Cross multiply
    15,004,458.05x = 20,706,251.49 × 8,128,940.13
  4. Step 4: Simplify right side
    15,004,458.05x = 168,319,878,678,933.28
  5. Step 5: Solve for x
    x = 168,319,878,678,933.28/15,004,458.05
  6. Step 6: Final answer
    x = 11,217,991.22

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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.