Home / 13,309.10-18,365.90-8,002.89

Finding the Fourth Proportional to 13,309.10, 18,365.90 and 8,002.89

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Solution

The fourth proportional to 13,309.10, 18,365.90 and 8,002.89 is: 11,043.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,309.10 : 18,365.90 = 8,002.89 : x
  2. Step 2: Convert to fraction form
    13,309.10/18,365.90 = 8,002.89/x
  3. Step 3: Cross multiply
    13,309.10x = 18,365.90 × 8,002.89
  4. Step 4: Simplify right side
    13,309.10x = 146,980,277.45
  5. Step 5: Solve for x
    x = 146,980,277.45/13,309.10
  6. Step 6: Final answer
    x = 11,043.59

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1.5x scale

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.