Home / 13,125,835.96-18,112,683.44-7,618,321.89

Finding the Fourth Proportional to 13,125,835.96, 18,112,683.44 and 7,618,321.89

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Solution

The fourth proportional to 13,125,835.96, 18,112,683.44 and 7,618,321.89 is: 10,512,721.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125,835.96 : 18,112,683.44 = 7,618,321.89 : x
  2. Step 2: Convert to fraction form
    13,125,835.96/18,112,683.44 = 7,618,321.89/x
  3. Step 3: Cross multiply
    13,125,835.96x = 18,112,683.44 × 7,618,321.89
  4. Step 4: Simplify right side
    13,125,835.96x = 137,988,252,756,638.30
  5. Step 5: Solve for x
    x = 137,988,252,756,638.30/13,125,835.96
  6. Step 6: Final answer
    x = 10,512,721.11

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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.