Home / 28,608.87-39,484.33-15,864.89

Finding the Fourth Proportional to 28,608.87, 39,484.33 and 15,864.89

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Solution

The fourth proportional to 28,608.87, 39,484.33 and 15,864.89 is: 21,895.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,608.87 : 39,484.33 = 15,864.89 : x
  2. Step 2: Convert to fraction form
    28,608.87/39,484.33 = 15,864.89/x
  3. Step 3: Cross multiply
    28,608.87x = 39,484.33 × 15,864.89
  4. Step 4: Simplify right side
    28,608.87x = 626,414,611.22
  5. Step 5: Solve for x
    x = 626,414,611.22/28,608.87
  6. Step 6: Final answer
    x = 21,895.82

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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.