Home / 20,189,428.23-27,860,357.12-11,020,299.51

Finding the Fourth Proportional to 20,189,428.23, 27,860,357.12 and 11,020,299.51

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Solution

The fourth proportional to 20,189,428.23, 27,860,357.12 and 11,020,299.51 is: 15,207,438.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189,428.23 : 27,860,357.12 = 11,020,299.51 : x
  2. Step 2: Convert to fraction form
    20,189,428.23/27,860,357.12 = 11,020,299.51/x
  3. Step 3: Cross multiply
    20,189,428.23x = 27,860,357.12 × 11,020,299.51
  4. Step 4: Simplify right side
    20,189,428.23x = 307,029,479,862,859.50
  5. Step 5: Solve for x
    x = 307,029,479,862,859.50/20,189,428.23
  6. Step 6: Final answer
    x = 15,207,438.09

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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.