Home / 13,178.93-19,766.18-5,781.40

Finding the Fourth Proportional to 13,178.93, 19,766.18 and 5,781.40

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Solution

The fourth proportional to 13,178.93, 19,766.18 and 5,781.40 is: 8,671.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.93 : 19,766.18 = 5,781.40 : x
  2. Step 2: Convert to fraction form
    13,178.93/19,766.18 = 5,781.40/x
  3. Step 3: Cross multiply
    13,178.93x = 19,766.18 × 5,781.40
  4. Step 4: Simplify right side
    13,178.93x = 114,276,182.80
  5. Step 5: Solve for x
    x = 114,276,182.80/13,178.93
  6. Step 6: Final answer
    x = 8,671.13

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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.