Home / 28,155,995.67-38,855,274.03-15,278,939.67

Finding the Fourth Proportional to 28,155,995.67, 38,855,274.03 and 15,278,939.67

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Solution

The fourth proportional to 28,155,995.67, 38,855,274.03 and 15,278,939.67 is: 21,084,936.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155,995.67 : 38,855,274.03 = 15,278,939.67 : x
  2. Step 2: Convert to fraction form
    28,155,995.67/38,855,274.03 = 15,278,939.67/x
  3. Step 3: Cross multiply
    28,155,995.67x = 38,855,274.03 × 15,278,939.67
  4. Step 4: Simplify right side
    28,155,995.67x = 593,667,387,765,687.75
  5. Step 5: Solve for x
    x = 593,667,387,765,687.75/28,155,995.67
  6. Step 6: Final answer
    x = 21,084,936.75

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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.