Home / 13,291,646.70-18,345,885-8,656,980.60

Finding the Fourth Proportional to 13,291,646.70, 18,345,885 and 8,656,980.60

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Solution

The fourth proportional to 13,291,646.70, 18,345,885 and 8,656,980.60 is: 11,948,855.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291,646.70 : 18,345,885 = 8,656,980.60 : x
  2. Step 2: Convert to fraction form
    13,291,646.70/18,345,885 = 8,656,980.60/x
  3. Step 3: Cross multiply
    13,291,646.70x = 18,345,885 × 8,656,980.60
  4. Step 4: Simplify right side
    13,291,646.70x = 158,819,970,534,831
  5. Step 5: Solve for x
    x = 158,819,970,534,831/13,291,646.70
  6. Step 6: Final answer
    x = 11,948,855.86

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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.