Home / 20,774,980.17-31,162,913.10-7,128,067.32

Finding the Fourth Proportional to 20,774,980.17, 31,162,913.10 and 7,128,067.32

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Solution

The fourth proportional to 20,774,980.17, 31,162,913.10 and 7,128,067.32 is: 10,692,252.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774,980.17 : 31,162,913.10 = 7,128,067.32 : x
  2. Step 2: Convert to fraction form
    20,774,980.17/31,162,913.10 = 7,128,067.32/x
  3. Step 3: Cross multiply
    20,774,980.17x = 31,162,913.10 × 7,128,067.32
  4. Step 4: Simplify right side
    20,774,980.17x = 222,131,342,464,109.91
  5. Step 5: Solve for x
    x = 222,131,342,464,109.91/20,774,980.17
  6. Step 6: Final answer
    x = 10,692,252.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.