Home / 13,121.19-19,677.53-4,353.75

Finding the Fourth Proportional to 13,121.19, 19,677.53 and 4,353.75

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Solution

The fourth proportional to 13,121.19, 19,677.53 and 4,353.75 is: 6,529.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.19 : 19,677.53 = 4,353.75 : x
  2. Step 2: Convert to fraction form
    13,121.19/19,677.53 = 4,353.75/x
  3. Step 3: Cross multiply
    13,121.19x = 19,677.53 × 4,353.75
  4. Step 4: Simplify right side
    13,121.19x = 85,671,057.12
  5. Step 5: Solve for x
    x = 85,671,057.12/13,121.19
  6. Step 6: Final answer
    x = 6,529.21

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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.