Home / 13,291,638.95-18,345,874.29-8,656,972.85

Finding the Fourth Proportional to 13,291,638.95, 18,345,874.29 and 8,656,972.85

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Solution

The fourth proportional to 13,291,638.95, 18,345,874.29 and 8,656,972.85 is: 11,948,845.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291,638.95 : 18,345,874.29 = 8,656,972.85 : x
  2. Step 2: Convert to fraction form
    13,291,638.95/18,345,874.29 = 8,656,972.85/x
  3. Step 3: Cross multiply
    13,291,638.95x = 18,345,874.29 × 8,656,972.85
  4. Step 4: Simplify right side
    13,291,638.95x = 158,819,735,638,043
  5. Step 5: Solve for x
    x = 158,819,735,638,043/13,291,638.95
  6. Step 6: Final answer
    x = 11,948,845.15

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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.