Home / 12,663.21-18,988.85-7,399.74

Finding the Fourth Proportional to 12,663.21, 18,988.85 and 7,399.74

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Solution

The fourth proportional to 12,663.21, 18,988.85 and 7,399.74 is: 11,096.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,663.21 : 18,988.85 = 7,399.74 : x
  2. Step 2: Convert to fraction form
    12,663.21/18,988.85 = 7,399.74/x
  3. Step 3: Cross multiply
    12,663.21x = 18,988.85 × 7,399.74
  4. Step 4: Simplify right side
    12,663.21x = 140,512,529.81
  5. Step 5: Solve for x
    x = 140,512,529.81/12,663.21
  6. Step 6: Final answer
    x = 11,096.12

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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.