Home / 28,155,979-38,855,251.02-15,278,923

Finding the Fourth Proportional to 28,155,979, 38,855,251.02 and 15,278,923

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Solution

The fourth proportional to 28,155,979, 38,855,251.02 and 15,278,923 is: 21,084,913.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155,979 : 38,855,251.02 = 15,278,923 : x
  2. Step 2: Convert to fraction form
    28,155,979/38,855,251.02 = 15,278,923/x
  3. Step 3: Cross multiply
    28,155,979x = 38,855,251.02 × 15,278,923
  4. Step 4: Simplify right side
    28,155,979x = 593,666,388,480,251.50
  5. Step 5: Solve for x
    x = 593,666,388,480,251.50/28,155,979
  6. Step 6: Final answer
    x = 21,084,913.74

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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.