Home / 12,650,431.24-18,955,777.86-9,778,834.60

Finding the Fourth Proportional to 12,650,431.24, 18,955,777.86 and 9,778,834.60

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Solution

The fourth proportional to 12,650,431.24, 18,955,777.86 and 9,778,834.60 is: 14,652,893.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,650,431.24 : 18,955,777.86 = 9,778,834.60 : x
  2. Step 2: Convert to fraction form
    12,650,431.24/18,955,777.86 = 9,778,834.60/x
  3. Step 3: Cross multiply
    12,650,431.24x = 18,955,777.86 × 9,778,834.60
  4. Step 4: Simplify right side
    12,650,431.24x = 185,365,416,407,281.94
  5. Step 5: Solve for x
    x = 185,365,416,407,281.94/12,650,431.24
  6. Step 6: Final answer
    x = 14,652,893.08

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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.