Home / 28,645.25-39,529.84-15,897.69

Finding the Fourth Proportional to 28,645.25, 39,529.84 and 15,897.69

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Solution

The fourth proportional to 28,645.25, 39,529.84 and 15,897.69 is: 21,938.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,645.25 : 39,529.84 = 15,897.69 : x
  2. Step 2: Convert to fraction form
    28,645.25/39,529.84 = 15,897.69/x
  3. Step 3: Cross multiply
    28,645.25x = 39,529.84 × 15,897.69
  4. Step 4: Simplify right side
    28,645.25x = 628,432,944.42
  5. Step 5: Solve for x
    x = 628,432,944.42/28,645.25
  6. Step 6: Final answer
    x = 21,938.47

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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.