Home / 13,665.61-20,503.58-5,351.57

Finding the Fourth Proportional to 13,665.61, 20,503.58 and 5,351.57

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Solution

The fourth proportional to 13,665.61, 20,503.58 and 5,351.57 is: 8,029.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.61 : 20,503.58 = 5,351.57 : x
  2. Step 2: Convert to fraction form
    13,665.61/20,503.58 = 5,351.57/x
  3. Step 3: Cross multiply
    13,665.61x = 20,503.58 × 5,351.57
  4. Step 4: Simplify right side
    13,665.61x = 109,726,214.34
  5. Step 5: Solve for x
    x = 109,726,214.34/13,665.61
  6. Step 6: Final answer
    x = 8,029.37

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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.