Home / 21,834.62-30,130.38-12,882.50

Finding the Fourth Proportional to 21,834.62, 30,130.38 and 12,882.50

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Solution

The fourth proportional to 21,834.62, 30,130.38 and 12,882.50 is: 17,777.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,834.62 : 30,130.38 = 12,882.50 : x
  2. Step 2: Convert to fraction form
    21,834.62/30,130.38 = 12,882.50/x
  3. Step 3: Cross multiply
    21,834.62x = 30,130.38 × 12,882.50
  4. Step 4: Simplify right side
    21,834.62x = 388,154,620.35
  5. Step 5: Solve for x
    x = 388,154,620.35/21,834.62
  6. Step 6: Final answer
    x = 17,777.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.