Home / 13,149.60-19,717.68-3,914.40

Finding the Fourth Proportional to 13,149.60, 19,717.68 and 3,914.40

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Solution

The fourth proportional to 13,149.60, 19,717.68 and 3,914.40 is: 5,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149.60 : 19,717.68 = 3,914.40 : x
  2. Step 2: Convert to fraction form
    13,149.60/19,717.68 = 3,914.40/x
  3. Step 3: Cross multiply
    13,149.60x = 19,717.68 × 3,914.40
  4. Step 4: Simplify right side
    13,149.60x = 77,182,886.59
  5. Step 5: Solve for x
    x = 77,182,886.59/13,149.60
  6. Step 6: Final answer
    x = 5,869.60

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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.