Home / 15,790,904.66-21,779,449.45-13,589,428.86

Finding the Fourth Proportional to 15,790,904.66, 21,779,449.45 and 13,589,428.86

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Solution

The fourth proportional to 15,790,904.66, 21,779,449.45 and 13,589,428.86 is: 18,743,085.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,790,904.66 : 21,779,449.45 = 13,589,428.86 : x
  2. Step 2: Convert to fraction form
    15,790,904.66/21,779,449.45 = 13,589,428.86/x
  3. Step 3: Cross multiply
    15,790,904.66x = 21,779,449.45 × 13,589,428.86
  4. Step 4: Simplify right side
    15,790,904.66x = 295,970,278,876,767.56
  5. Step 5: Solve for x
    x = 295,970,278,876,767.56/15,790,904.66
  6. Step 6: Final answer
    x = 18,743,085.67

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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.