Home / 12,358,780.60-18,538,170.90-11,854,895.80

Finding the Fourth Proportional to 12,358,780.60, 18,538,170.90 and 11,854,895.80

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Solution

The fourth proportional to 12,358,780.60, 18,538,170.90 and 11,854,895.80 is: 17,782,343.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,358,780.60 : 18,538,170.90 = 11,854,895.80 : x
  2. Step 2: Convert to fraction form
    12,358,780.60/18,538,170.90 = 11,854,895.80/x
  3. Step 3: Cross multiply
    12,358,780.60x = 18,538,170.90 × 11,854,895.80
  4. Step 4: Simplify right side
    12,358,780.60x = 219,768,084,342,092.22
  5. Step 5: Solve for x
    x = 219,768,084,342,092.22/12,358,780.60
  6. Step 6: Final answer
    x = 17,782,343.70

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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.