Home / 20,672,308.88-28,527,786.30-11,507,116.76

Finding the Fourth Proportional to 20,672,308.88, 28,527,786.30 and 11,507,116.76

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Solution

The fourth proportional to 20,672,308.88, 28,527,786.30 and 11,507,116.76 is: 15,879,821.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672,308.88 : 28,527,786.30 = 11,507,116.76 : x
  2. Step 2: Convert to fraction form
    20,672,308.88/28,527,786.30 = 11,507,116.76/x
  3. Step 3: Cross multiply
    20,672,308.88x = 28,527,786.30 × 11,507,116.76
  4. Step 4: Simplify right side
    20,672,308.88x = 328,272,567,858,428.38
  5. Step 5: Solve for x
    x = 328,272,567,858,428.38/20,672,308.88
  6. Step 6: Final answer
    x = 15,879,821.15

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1.5x scale

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.