Home / 13,299,928.89-18,353,893.58-7,188,357.39

Finding the Fourth Proportional to 13,299,928.89, 18,353,893.58 and 7,188,357.39

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Solution

The fourth proportional to 13,299,928.89, 18,353,893.58 and 7,188,357.39 is: 9,919,928.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299,928.89 : 18,353,893.58 = 7,188,357.39 : x
  2. Step 2: Convert to fraction form
    13,299,928.89/18,353,893.58 = 7,188,357.39/x
  3. Step 3: Cross multiply
    13,299,928.89x = 18,353,893.58 × 7,188,357.39
  4. Step 4: Simplify right side
    13,299,928.89x = 131,934,346,550,681.75
  5. Step 5: Solve for x
    x = 131,934,346,550,681.75/13,299,928.89
  6. Step 6: Final answer
    x = 9,919,928.72

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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.