Home / 13,553.68-20,320.47-6,434.39

Finding the Fourth Proportional to 13,553.68, 20,320.47 and 6,434.39

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Solution

The fourth proportional to 13,553.68, 20,320.47 and 6,434.39 is: 9,646.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.68 : 20,320.47 = 6,434.39 : x
  2. Step 2: Convert to fraction form
    13,553.68/20,320.47 = 6,434.39/x
  3. Step 3: Cross multiply
    13,553.68x = 20,320.47 × 6,434.39
  4. Step 4: Simplify right side
    13,553.68x = 130,749,828.96
  5. Step 5: Solve for x
    x = 130,749,828.96/13,553.68
  6. Step 6: Final answer
    x = 9,646.82

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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.