Home / 20,742,022.40-31,103,702.40-7,958,278.40

Finding the Fourth Proportional to 20,742,022.40, 31,103,702.40 and 7,958,278.40

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Solution

The fourth proportional to 20,742,022.40, 31,103,702.40 and 7,958,278.40 is: 11,933,837.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742,022.40 : 31,103,702.40 = 7,958,278.40 : x
  2. Step 2: Convert to fraction form
    20,742,022.40/31,103,702.40 = 7,958,278.40/x
  3. Step 3: Cross multiply
    20,742,022.40x = 31,103,702.40 × 7,958,278.40
  4. Step 4: Simplify right side
    20,742,022.40x = 247,531,922,969,948.16
  5. Step 5: Solve for x
    x = 247,531,922,969,948.16/20,742,022.40
  6. Step 6: Final answer
    x = 11,933,837.41

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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.