Home / 12,516.28-18,780.89-5,501.21

Finding the Fourth Proportional to 12,516.28, 18,780.89 and 5,501.21

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Solution

The fourth proportional to 12,516.28, 18,780.89 and 5,501.21 is: 8,254.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,516.28 : 18,780.89 = 5,501.21 : x
  2. Step 2: Convert to fraction form
    12,516.28/18,780.89 = 5,501.21/x
  3. Step 3: Cross multiply
    12,516.28x = 18,780.89 × 5,501.21
  4. Step 4: Simplify right side
    12,516.28x = 103,317,619.88
  5. Step 5: Solve for x
    x = 103,317,619.88/12,516.28
  6. Step 6: Final answer
    x = 8,254.66

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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.