Home / 20,145.30-30,217.95-16,864.80

Finding the Fourth Proportional to 20,145.30, 30,217.95 and 16,864.80

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Solution

The fourth proportional to 20,145.30, 30,217.95 and 16,864.80 is: 25,297.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,145.30 : 30,217.95 = 16,864.80 : x
  2. Step 2: Convert to fraction form
    20,145.30/30,217.95 = 16,864.80/x
  3. Step 3: Cross multiply
    20,145.30x = 30,217.95 × 16,864.80
  4. Step 4: Simplify right side
    20,145.30x = 509,619,683.16
  5. Step 5: Solve for x
    x = 509,619,683.16/20,145.30
  6. Step 6: Final answer
    x = 25,297.20

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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.