Home / 13,209,261.55-18,228,912.98-7,407,918.74

Finding the Fourth Proportional to 13,209,261.55, 18,228,912.98 and 7,407,918.74

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Solution

The fourth proportional to 13,209,261.55, 18,228,912.98 and 7,407,918.74 is: 10,223,001.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,209,261.55 : 18,228,912.98 = 7,407,918.74 : x
  2. Step 2: Convert to fraction form
    13,209,261.55/18,228,912.98 = 7,407,918.74/x
  3. Step 3: Cross multiply
    13,209,261.55x = 18,228,912.98 × 7,407,918.74
  4. Step 4: Simplify right side
    13,209,261.55x = 135,038,306,042,874.33
  5. Step 5: Solve for x
    x = 135,038,306,042,874.33/13,209,261.55
  6. Step 6: Final answer
    x = 10,223,001.91

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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.