Home / 28,284.14-39,033.30-15,708.89

Finding the Fourth Proportional to 28,284.14, 39,033.30 and 15,708.89

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Solution

The fourth proportional to 28,284.14, 39,033.30 and 15,708.89 is: 21,678.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,284.14 : 39,033.30 = 15,708.89 : x
  2. Step 2: Convert to fraction form
    28,284.14/39,033.30 = 15,708.89/x
  3. Step 3: Cross multiply
    28,284.14x = 39,033.30 × 15,708.89
  4. Step 4: Simplify right side
    28,284.14x = 613,169,816.04
  5. Step 5: Solve for x
    x = 613,169,816.04/28,284.14
  6. Step 6: Final answer
    x = 21,678.93

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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.