Home / 19,245.60-28,882.98-12,990.78

Finding the Fourth Proportional to 19,245.60, 28,882.98 and 12,990.78

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Solution

The fourth proportional to 19,245.60, 28,882.98 and 12,990.78 is: 19,496.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,245.60 : 28,882.98 = 12,990.78 : x
  2. Step 2: Convert to fraction form
    19,245.60/28,882.98 = 12,990.78/x
  3. Step 3: Cross multiply
    19,245.60x = 28,882.98 × 12,990.78
  4. Step 4: Simplify right side
    19,245.60x = 375,212,438.92
  5. Step 5: Solve for x
    x = 375,212,438.92/19,245.60
  6. Step 6: Final answer
    x = 19,496.01

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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.