Home / 39,778.80-59,669.64-13,486.08

Finding the Fourth Proportional to 39,778.80, 59,669.64 and 13,486.08

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Solution

The fourth proportional to 39,778.80, 59,669.64 and 13,486.08 is: 20,229.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,778.80 : 59,669.64 = 13,486.08 : x
  2. Step 2: Convert to fraction form
    39,778.80/59,669.64 = 13,486.08/x
  3. Step 3: Cross multiply
    39,778.80x = 59,669.64 × 13,486.08
  4. Step 4: Simplify right side
    39,778.80x = 804,709,538.61
  5. Step 5: Solve for x
    x = 804,709,538.61/39,778.80
  6. Step 6: Final answer
    x = 20,229.61

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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.