Home / 21,009,469.68-28,993,068.18-11,351,677.68

Finding the Fourth Proportional to 21,009,469.68, 28,993,068.18 and 11,351,677.68

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Solution

The fourth proportional to 21,009,469.68, 28,993,068.18 and 11,351,677.68 is: 15,665,315.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009,469.68 : 28,993,068.18 = 11,351,677.68 : x
  2. Step 2: Convert to fraction form
    21,009,469.68/28,993,068.18 = 11,351,677.68/x
  3. Step 3: Cross multiply
    21,009,469.68x = 28,993,068.18 × 11,351,677.68
  4. Step 4: Simplify right side
    21,009,469.68x = 329,119,964,933,624.19
  5. Step 5: Solve for x
    x = 329,119,964,933,624.19/21,009,469.68
  6. Step 6: Final answer
    x = 15,665,315.21

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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.