Home / 13,320.81-19,990.13-5,529.62

Finding the Fourth Proportional to 13,320.81, 19,990.13 and 5,529.62

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Solution

The fourth proportional to 13,320.81, 19,990.13 and 5,529.62 is: 8,298.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.81 : 19,990.13 = 5,529.62 : x
  2. Step 2: Convert to fraction form
    13,320.81/19,990.13 = 5,529.62/x
  3. Step 3: Cross multiply
    13,320.81x = 19,990.13 × 5,529.62
  4. Step 4: Simplify right side
    13,320.81x = 110,537,822.65
  5. Step 5: Solve for x
    x = 110,537,822.65/13,320.81
  6. Step 6: Final answer
    x = 8,298.13

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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.