Home / 13,291,647.20-18,345,885.70-8,656,981.10

Finding the Fourth Proportional to 13,291,647.20, 18,345,885.70 and 8,656,981.10

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Solution

The fourth proportional to 13,291,647.20, 18,345,885.70 and 8,656,981.10 is: 11,948,856.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291,647.20 : 18,345,885.70 = 8,656,981.10 : x
  2. Step 2: Convert to fraction form
    13,291,647.20/18,345,885.70 = 8,656,981.10/x
  3. Step 3: Cross multiply
    13,291,647.20x = 18,345,885.70 × 8,656,981.10
  4. Step 4: Simplify right side
    13,291,647.20x = 158,819,985,767,660.25
  5. Step 5: Solve for x
    x = 158,819,985,767,660.25/13,291,647.20
  6. Step 6: Final answer
    x = 11,948,856.55

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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.