Home / 28,525.39-39,365.30-15,777.90

Finding the Fourth Proportional to 28,525.39, 39,365.30 and 15,777.90

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Solution

The fourth proportional to 28,525.39, 39,365.30 and 15,777.90 is: 21,773.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,525.39 : 39,365.30 = 15,777.90 : x
  2. Step 2: Convert to fraction form
    28,525.39/39,365.30 = 15,777.90/x
  3. Step 3: Cross multiply
    28,525.39x = 39,365.30 × 15,777.90
  4. Step 4: Simplify right side
    28,525.39x = 621,101,894.77
  5. Step 5: Solve for x
    x = 621,101,894.77/28,525.39
  6. Step 6: Final answer
    x = 21,773.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.