Home / 12,621.20-18,931.82-12,602.97

Finding the Fourth Proportional to 12,621.20, 18,931.82 and 12,602.97

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Solution

The fourth proportional to 12,621.20, 18,931.82 and 12,602.97 is: 18,904.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621.20 : 18,931.82 = 12,602.97 : x
  2. Step 2: Convert to fraction form
    12,621.20/18,931.82 = 12,602.97/x
  3. Step 3: Cross multiply
    12,621.20x = 18,931.82 × 12,602.97
  4. Step 4: Simplify right side
    12,621.20x = 238,597,096.49
  5. Step 5: Solve for x
    x = 238,597,096.49/12,621.20
  6. Step 6: Final answer
    x = 18,904.48

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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.