Home / 20,106.60-30,156.30-12,697.80

Finding the Fourth Proportional to 20,106.60, 30,156.30 and 12,697.80

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Solution

The fourth proportional to 20,106.60, 30,156.30 and 12,697.80 is: 19,044.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,106.60 : 30,156.30 = 12,697.80 : x
  2. Step 2: Convert to fraction form
    20,106.60/30,156.30 = 12,697.80/x
  3. Step 3: Cross multiply
    20,106.60x = 30,156.30 × 12,697.80
  4. Step 4: Simplify right side
    20,106.60x = 382,918,666.14
  5. Step 5: Solve for x
    x = 382,918,666.14/20,106.60
  6. Step 6: Final answer
    x = 19,044.43

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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.