Home / 28,442.87-39,250.89-15,696.17

Finding the Fourth Proportional to 28,442.87, 39,250.89 and 15,696.17

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Solution

The fourth proportional to 28,442.87, 39,250.89 and 15,696.17 is: 21,660.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,442.87 : 39,250.89 = 15,696.17 : x
  2. Step 2: Convert to fraction form
    28,442.87/39,250.89 = 15,696.17/x
  3. Step 3: Cross multiply
    28,442.87x = 39,250.89 × 15,696.17
  4. Step 4: Simplify right side
    28,442.87x = 616,088,740.22
  5. Step 5: Solve for x
    x = 616,088,740.22/28,442.87
  6. Step 6: Final answer
    x = 21,660.57

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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.