Home / 13,410.26-20,115.93-6,386.66

Finding the Fourth Proportional to 13,410.26, 20,115.93 and 6,386.66

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Solution

The fourth proportional to 13,410.26, 20,115.93 and 6,386.66 is: 9,580.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,410.26 : 20,115.93 = 6,386.66 : x
  2. Step 2: Convert to fraction form
    13,410.26/20,115.93 = 6,386.66/x
  3. Step 3: Cross multiply
    13,410.26x = 20,115.93 × 6,386.66
  4. Step 4: Simplify right side
    13,410.26x = 128,473,605.49
  5. Step 5: Solve for x
    x = 128,473,605.49/13,410.26
  6. Step 6: Final answer
    x = 9,580.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.