Home / 20,501,199.90-30,756,465.45-11,977,148.70

Finding the Fourth Proportional to 20,501,199.90, 30,756,465.45 and 11,977,148.70

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Solution

The fourth proportional to 20,501,199.90, 30,756,465.45 and 11,977,148.70 is: 17,968,448.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,501,199.90 : 30,756,465.45 = 11,977,148.70 : x
  2. Step 2: Convert to fraction form
    20,501,199.90/30,756,465.45 = 11,977,148.70/x
  3. Step 3: Cross multiply
    20,501,199.90x = 30,756,465.45 × 11,977,148.70
  4. Step 4: Simplify right side
    20,501,199.90x = 368,374,760,181,062.38
  5. Step 5: Solve for x
    x = 368,374,760,181,062.38/20,501,199.90
  6. Step 6: Final answer
    x = 17,968,448.77

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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.