Home / 28,532.97-39,376.66-15,785.93

Finding the Fourth Proportional to 28,532.97, 39,376.66 and 15,785.93

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Solution

The fourth proportional to 28,532.97, 39,376.66 and 15,785.93 is: 21,785.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,532.97 : 39,376.66 = 15,785.93 : x
  2. Step 2: Convert to fraction form
    28,532.97/39,376.66 = 15,785.93/x
  3. Step 3: Cross multiply
    28,532.97x = 39,376.66 × 15,785.93
  4. Step 4: Simplify right side
    28,532.97x = 621,597,119.46
  5. Step 5: Solve for x
    x = 621,597,119.46/28,532.97
  6. Step 6: Final answer
    x = 21,785.22

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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.