Home / 28,712.76-39,622.77-15,965.61

Finding the Fourth Proportional to 28,712.76, 39,622.77 and 15,965.61

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Solution

The fourth proportional to 28,712.76, 39,622.77 and 15,965.61 is: 22,032.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,712.76 : 39,622.77 = 15,965.61 : x
  2. Step 2: Convert to fraction form
    28,712.76/39,622.77 = 15,965.61/x
  3. Step 3: Cross multiply
    28,712.76x = 39,622.77 × 15,965.61
  4. Step 4: Simplify right side
    28,712.76x = 632,601,692.94
  5. Step 5: Solve for x
    x = 632,601,692.94/28,712.76
  6. Step 6: Final answer
    x = 22,032.08

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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.