Home / 13,230.56-19,847.59-6,990.81

Finding the Fourth Proportional to 13,230.56, 19,847.59 and 6,990.81

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Solution

The fourth proportional to 13,230.56, 19,847.59 and 6,990.81 is: 10,487.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,230.56 : 19,847.59 = 6,990.81 : x
  2. Step 2: Convert to fraction form
    13,230.56/19,847.59 = 6,990.81/x
  3. Step 3: Cross multiply
    13,230.56x = 19,847.59 × 6,990.81
  4. Step 4: Simplify right side
    13,230.56x = 138,750,730.65
  5. Step 5: Solve for x
    x = 138,750,730.65/13,230.56
  6. Step 6: Final answer
    x = 10,487.14

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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.