Home / 18,686,427.90-28,033,578.45-7,898,175.60

Finding the Fourth Proportional to 18,686,427.90, 28,033,578.45 and 7,898,175.60

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Solution

The fourth proportional to 18,686,427.90, 28,033,578.45 and 7,898,175.60 is: 11,848,927.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686,427.90 : 28,033,578.45 = 7,898,175.60 : x
  2. Step 2: Convert to fraction form
    18,686,427.90/28,033,578.45 = 7,898,175.60/x
  3. Step 3: Cross multiply
    18,686,427.90x = 28,033,578.45 × 7,898,175.60
  4. Step 4: Simplify right side
    18,686,427.90x = 221,414,125,294,475.81
  5. Step 5: Solve for x
    x = 221,414,125,294,475.81/18,686,427.90
  6. Step 6: Final answer
    x = 11,848,927.28

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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.