Home / 13,184.49-19,780.38-5,398.77

Finding the Fourth Proportional to 13,184.49, 19,780.38 and 5,398.77

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Solution

The fourth proportional to 13,184.49, 19,780.38 and 5,398.77 is: 8,099.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,184.49 : 19,780.38 = 5,398.77 : x
  2. Step 2: Convert to fraction form
    13,184.49/19,780.38 = 5,398.77/x
  3. Step 3: Cross multiply
    13,184.49x = 19,780.38 × 5,398.77
  4. Step 4: Simplify right side
    13,184.49x = 106,789,722.13
  5. Step 5: Solve for x
    x = 106,789,722.13/13,184.49
  6. Step 6: Final answer
    x = 8,099.65

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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.