Home / 28,282.59-39,028.91-15,708.15

Finding the Fourth Proportional to 28,282.59, 39,028.91 and 15,708.15

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Solution

The fourth proportional to 28,282.59, 39,028.91 and 15,708.15 is: 21,676.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,282.59 : 39,028.91 = 15,708.15 : x
  2. Step 2: Convert to fraction form
    28,282.59/39,028.91 = 15,708.15/x
  3. Step 3: Cross multiply
    28,282.59x = 39,028.91 × 15,708.15
  4. Step 4: Simplify right side
    28,282.59x = 613,071,894.08
  5. Step 5: Solve for x
    x = 613,071,894.08/28,282.59
  6. Step 6: Final answer
    x = 21,676.65

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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.