Home / 13,645.40-20,468.52-5,325.08

Finding the Fourth Proportional to 13,645.40, 20,468.52 and 5,325.08

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Solution

The fourth proportional to 13,645.40, 20,468.52 and 5,325.08 is: 7,987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,645.40 : 20,468.52 = 5,325.08 : x
  2. Step 2: Convert to fraction form
    13,645.40/20,468.52 = 5,325.08/x
  3. Step 3: Cross multiply
    13,645.40x = 20,468.52 × 5,325.08
  4. Step 4: Simplify right side
    13,645.40x = 108,996,404.14
  5. Step 5: Solve for x
    x = 108,996,404.14/13,645.40
  6. Step 6: Final answer
    x = 7,987.78

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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.