Home / 39,855.40-59,781.06-13,560.64

Finding the Fourth Proportional to 39,855.40, 59,781.06 and 13,560.64

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Solution

The fourth proportional to 39,855.40, 59,781.06 and 13,560.64 is: 20,340.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,855.40 : 59,781.06 = 13,560.64 : x
  2. Step 2: Convert to fraction form
    39,855.40/59,781.06 = 13,560.64/x
  3. Step 3: Cross multiply
    39,855.40x = 59,781.06 × 13,560.64
  4. Step 4: Simplify right side
    39,855.40x = 810,669,433.48
  5. Step 5: Solve for x
    x = 810,669,433.48/39,855.40
  6. Step 6: Final answer
    x = 20,340.27

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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.