Home / 20,800,147.28-31,174,666.12-11,683,080.09

Finding the Fourth Proportional to 20,800,147.28, 31,174,666.12 and 11,683,080.09

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Solution

The fourth proportional to 20,800,147.28, 31,174,666.12 and 11,683,080.09 is: 17,510,266.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,800,147.28 : 31,174,666.12 = 11,683,080.09 : x
  2. Step 2: Convert to fraction form
    20,800,147.28/31,174,666.12 = 11,683,080.09/x
  3. Step 3: Cross multiply
    20,800,147.28x = 31,174,666.12 × 11,683,080.09
  4. Step 4: Simplify right side
    20,800,147.28x = 364,216,121,073,573.38
  5. Step 5: Solve for x
    x = 364,216,121,073,573.38/20,800,147.28
  6. Step 6: Final answer
    x = 17,510,266.45

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1.5x scale

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.