Home / 19,318.11-28,981.31-5,990.81

Finding the Fourth Proportional to 19,318.11, 28,981.31 and 5,990.81

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Solution

The fourth proportional to 19,318.11, 28,981.31 and 5,990.81 is: 8,987.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,318.11 : 28,981.31 = 5,990.81 : x
  2. Step 2: Convert to fraction form
    19,318.11/28,981.31 = 5,990.81/x
  3. Step 3: Cross multiply
    19,318.11x = 28,981.31 × 5,990.81
  4. Step 4: Simplify right side
    19,318.11x = 173,621,564.26
  5. Step 5: Solve for x
    x = 173,621,564.26/19,318.11
  6. Step 6: Final answer
    x = 8,987.50

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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.