Home / 30,132.28-45,069.26-21,717.80

Finding the Fourth Proportional to 30,132.28, 45,069.26 and 21,717.80

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Solution

The fourth proportional to 30,132.28, 45,069.26 and 21,717.80 is: 32,483.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,132.28 : 45,069.26 = 21,717.80 : x
  2. Step 2: Convert to fraction form
    30,132.28/45,069.26 = 21,717.80/x
  3. Step 3: Cross multiply
    30,132.28x = 45,069.26 × 21,717.80
  4. Step 4: Simplify right side
    30,132.28x = 978,805,174.83
  5. Step 5: Solve for x
    x = 978,805,174.83/30,132.28
  6. Step 6: Final answer
    x = 32,483.61

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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.