Home / 12,478,801.60-18,686,709.60-8,195,780.80

Finding the Fourth Proportional to 12,478,801.60, 18,686,709.60 and 8,195,780.80

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Solution

The fourth proportional to 12,478,801.60, 18,686,709.60 and 8,195,780.80 is: 12,272,987.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,478,801.60 : 18,686,709.60 = 8,195,780.80 : x
  2. Step 2: Convert to fraction form
    12,478,801.60/18,686,709.60 = 8,195,780.80/x
  3. Step 3: Cross multiply
    12,478,801.60x = 18,686,709.60 × 8,195,780.80
  4. Step 4: Simplify right side
    12,478,801.60x = 153,152,175,754,855.69
  5. Step 5: Solve for x
    x = 153,152,175,754,855.69/12,478,801.60
  6. Step 6: Final answer
    x = 12,272,987.48

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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.