Home / 13,188.15-19,781.10-4,866.57

Finding the Fourth Proportional to 13,188.15, 19,781.10 and 4,866.57

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Solution

The fourth proportional to 13,188.15, 19,781.10 and 4,866.57 is: 7,299.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188.15 : 19,781.10 = 4,866.57 : x
  2. Step 2: Convert to fraction form
    13,188.15/19,781.10 = 4,866.57/x
  3. Step 3: Cross multiply
    13,188.15x = 19,781.10 × 4,866.57
  4. Step 4: Simplify right side
    13,188.15x = 96,266,107.83
  5. Step 5: Solve for x
    x = 96,266,107.83/13,188.15
  6. Step 6: Final answer
    x = 7,299.44

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1.5x scale

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.