Home / 13,318.81-19,987.13-5,527.62

Finding the Fourth Proportional to 13,318.81, 19,987.13 and 5,527.62

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Solution

The fourth proportional to 13,318.81, 19,987.13 and 5,527.62 is: 8,295.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,318.81 : 19,987.13 = 5,527.62 : x
  2. Step 2: Convert to fraction form
    13,318.81/19,987.13 = 5,527.62/x
  3. Step 3: Cross multiply
    13,318.81x = 19,987.13 × 5,527.62
  4. Step 4: Simplify right side
    13,318.81x = 110,481,259.53
  5. Step 5: Solve for x
    x = 110,481,259.53/13,318.81
  6. Step 6: Final answer
    x = 8,295.13

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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.