Home / 13,251.40-19,876.79-5,460.21

Finding the Fourth Proportional to 13,251.40, 19,876.79 and 5,460.21

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Solution

The fourth proportional to 13,251.40, 19,876.79 and 5,460.21 is: 8,190.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.40 : 19,876.79 = 5,460.21 : x
  2. Step 2: Convert to fraction form
    13,251.40/19,876.79 = 5,460.21/x
  3. Step 3: Cross multiply
    13,251.40x = 19,876.79 × 5,460.21
  4. Step 4: Simplify right side
    13,251.40x = 108,531,461.18
  5. Step 5: Solve for x
    x = 108,531,461.18/13,251.40
  6. Step 6: Final answer
    x = 8,190.19

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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.