Home / 28,155,995.68-38,855,274.04-15,278,939.68

Finding the Fourth Proportional to 28,155,995.68, 38,855,274.04 and 15,278,939.68

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Solution

The fourth proportional to 28,155,995.68, 38,855,274.04 and 15,278,939.68 is: 21,084,936.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155,995.68 : 38,855,274.04 = 15,278,939.68 : x
  2. Step 2: Convert to fraction form
    28,155,995.68/38,855,274.04 = 15,278,939.68/x
  3. Step 3: Cross multiply
    28,155,995.68x = 38,855,274.04 × 15,278,939.68
  4. Step 4: Simplify right side
    28,155,995.68x = 593,667,388,307,029.88
  5. Step 5: Solve for x
    x = 593,667,388,307,029.88/28,155,995.68
  6. Step 6: Final answer
    x = 21,084,936.76

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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.