Home / 20,136.42-30,206.12-5,345.02

Finding the Fourth Proportional to 20,136.42, 30,206.12 and 5,345.02

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Solution

The fourth proportional to 20,136.42, 30,206.12 and 5,345.02 is: 8,017.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.42 : 30,206.12 = 5,345.02 : x
  2. Step 2: Convert to fraction form
    20,136.42/30,206.12 = 5,345.02/x
  3. Step 3: Cross multiply
    20,136.42x = 30,206.12 × 5,345.02
  4. Step 4: Simplify right side
    20,136.42x = 161,452,315.52
  5. Step 5: Solve for x
    x = 161,452,315.52/20,136.42
  6. Step 6: Final answer
    x = 8,017.93

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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.