Home / 28,155,924-38,855,175.12-15,278,868

Finding the Fourth Proportional to 28,155,924, 38,855,175.12 and 15,278,868

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Solution

The fourth proportional to 28,155,924, 38,855,175.12 and 15,278,868 is: 21,084,837.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155,924 : 38,855,175.12 = 15,278,868 : x
  2. Step 2: Convert to fraction form
    28,155,924/38,855,175.12 = 15,278,868/x
  3. Step 3: Cross multiply
    28,155,924x = 38,855,175.12 × 15,278,868
  4. Step 4: Simplify right side
    28,155,924x = 593,663,091,775,364.12
  5. Step 5: Solve for x
    x = 593,663,091,775,364.12/28,155,924
  6. Step 6: Final answer
    x = 21,084,837.84

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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.