Home / 28,708.61-39,616.64-15,961.77

Finding the Fourth Proportional to 28,708.61, 39,616.64 and 15,961.77

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Solution

The fourth proportional to 28,708.61, 39,616.64 and 15,961.77 is: 22,026.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,708.61 : 39,616.64 = 15,961.77 : x
  2. Step 2: Convert to fraction form
    28,708.61/39,616.64 = 15,961.77/x
  3. Step 3: Cross multiply
    28,708.61x = 39,616.64 × 15,961.77
  4. Step 4: Simplify right side
    28,708.61x = 632,351,735.76
  5. Step 5: Solve for x
    x = 632,351,735.76/28,708.61
  6. Step 6: Final answer
    x = 22,026.56

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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.