Home / 28,639.98-39,523.42-15,894.02

Finding the Fourth Proportional to 28,639.98, 39,523.42 and 15,894.02

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Solution

The fourth proportional to 28,639.98, 39,523.42 and 15,894.02 is: 21,933.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.98 : 39,523.42 = 15,894.02 : x
  2. Step 2: Convert to fraction form
    28,639.98/39,523.42 = 15,894.02/x
  3. Step 3: Cross multiply
    28,639.98x = 39,523.42 × 15,894.02
  4. Step 4: Simplify right side
    28,639.98x = 628,186,101.92
  5. Step 5: Solve for x
    x = 628,186,101.92/28,639.98
  6. Step 6: Final answer
    x = 21,933.89

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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.