Home / 20,769,729.24-28,663,952.20-11,479,113.36

Finding the Fourth Proportional to 20,769,729.24, 28,663,952.20 and 11,479,113.36

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Solution

The fourth proportional to 20,769,729.24, 28,663,952.20 and 11,479,113.36 is: 15,842,130.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769,729.24 : 28,663,952.20 = 11,479,113.36 : x
  2. Step 2: Convert to fraction form
    20,769,729.24/28,663,952.20 = 11,479,113.36/x
  3. Step 3: Cross multiply
    20,769,729.24x = 28,663,952.20 × 11,479,113.36
  4. Step 4: Simplify right side
    20,769,729.24x = 329,036,756,649,421.38
  5. Step 5: Solve for x
    x = 329,036,756,649,421.38/20,769,729.24
  6. Step 6: Final answer
    x = 15,842,130.29

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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.