Home / 20,977,895.52-28,949,990.88-11,686,090.80

Finding the Fourth Proportional to 20,977,895.52, 28,949,990.88 and 11,686,090.80

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Solution

The fourth proportional to 20,977,895.52, 28,949,990.88 and 11,686,090.80 is: 16,127,081.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977,895.52 : 28,949,990.88 = 11,686,090.80 : x
  2. Step 2: Convert to fraction form
    20,977,895.52/28,949,990.88 = 11,686,090.80/x
  3. Step 3: Cross multiply
    20,977,895.52x = 28,949,990.88 × 11,686,090.80
  4. Step 4: Simplify right side
    20,977,895.52x = 338,312,222,082,851.94
  5. Step 5: Solve for x
    x = 338,312,222,082,851.94/20,977,895.52
  6. Step 6: Final answer
    x = 16,127,081.09

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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.