Home / 15,790,885.69-21,779,423.26-13,589,409.88

Finding the Fourth Proportional to 15,790,885.69, 21,779,423.26 and 13,589,409.88

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Solution

The fourth proportional to 15,790,885.69, 21,779,423.26 and 13,589,409.88 is: 18,743,059.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,790,885.69 : 21,779,423.26 = 13,589,409.88 : x
  2. Step 2: Convert to fraction form
    15,790,885.69/21,779,423.26 = 13,589,409.88/x
  3. Step 3: Cross multiply
    15,790,885.69x = 21,779,423.26 × 13,589,409.88
  4. Step 4: Simplify right side
    15,790,885.69x = 295,969,509,630,145.88
  5. Step 5: Solve for x
    x = 295,969,509,630,145.88/15,790,885.69
  6. Step 6: Final answer
    x = 18,743,059.47

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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.