Home / 20,136.52-30,000.65-19,145.08

Finding the Fourth Proportional to 20,136.52, 30,000.65 and 19,145.08

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Solution

The fourth proportional to 20,136.52, 30,000.65 and 19,145.08 is: 28,523.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,136.52 : 30,000.65 = 19,145.08 : x
  2. Step 2: Convert to fraction form
    20,136.52/30,000.65 = 19,145.08/x
  3. Step 3: Cross multiply
    20,136.52x = 30,000.65 × 19,145.08
  4. Step 4: Simplify right side
    20,136.52x = 574,364,844.30
  5. Step 5: Solve for x
    x = 574,364,844.30/20,136.52
  6. Step 6: Final answer
    x = 28,523.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.