Home / 13,149,615.40-19,724,423.10-11,721,941.80

Finding the Fourth Proportional to 13,149,615.40, 19,724,423.10 and 11,721,941.80

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Solution

The fourth proportional to 13,149,615.40, 19,724,423.10 and 11,721,941.80 is: 17,582,912.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149,615.40 : 19,724,423.10 = 11,721,941.80 : x
  2. Step 2: Convert to fraction form
    13,149,615.40/19,724,423.10 = 11,721,941.80/x
  3. Step 3: Cross multiply
    13,149,615.40x = 19,724,423.10 × 11,721,941.80
  4. Step 4: Simplify right side
    13,149,615.40x = 231,208,539,616,775.62
  5. Step 5: Solve for x
    x = 231,208,539,616,775.62/13,149,615.40
  6. Step 6: Final answer
    x = 17,582,912.70

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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.