Home / 13,320.82-19,990.14-5,529.62

Finding the Fourth Proportional to 13,320.82, 19,990.14 and 5,529.62

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Solution

The fourth proportional to 13,320.82, 19,990.14 and 5,529.62 is: 8,298.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.82 : 19,990.14 = 5,529.62 : x
  2. Step 2: Convert to fraction form
    13,320.82/19,990.14 = 5,529.62/x
  3. Step 3: Cross multiply
    13,320.82x = 19,990.14 × 5,529.62
  4. Step 4: Simplify right side
    13,320.82x = 110,537,877.95
  5. Step 5: Solve for x
    x = 110,537,877.95/13,320.82
  6. Step 6: Final answer
    x = 8,298.13

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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.