Home / 15,113,790-20,856,720.24-8,238,211.92

Finding the Fourth Proportional to 15,113,790, 20,856,720.24 and 8,238,211.92

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Solution

The fourth proportional to 15,113,790, 20,856,720.24 and 8,238,211.92 is: 11,368,563.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,113,790 : 20,856,720.24 = 8,238,211.92 : x
  2. Step 2: Convert to fraction form
    15,113,790/20,856,720.24 = 8,238,211.92/x
  3. Step 3: Cross multiply
    15,113,790x = 20,856,720.24 × 8,238,211.92
  4. Step 4: Simplify right side
    15,113,790x = 171,822,081,293,273.25
  5. Step 5: Solve for x
    x = 171,822,081,293,273.25/15,113,790
  6. Step 6: Final answer
    x = 11,368,563.50

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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.