Home / 27,622.87-38,120.58-15,685.90

Finding the Fourth Proportional to 27,622.87, 38,120.58 and 15,685.90

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Solution

The fourth proportional to 27,622.87, 38,120.58 and 15,685.90 is: 21,647.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,622.87 : 38,120.58 = 15,685.90 : x
  2. Step 2: Convert to fraction form
    27,622.87/38,120.58 = 15,685.90/x
  3. Step 3: Cross multiply
    27,622.87x = 38,120.58 × 15,685.90
  4. Step 4: Simplify right side
    27,622.87x = 597,955,605.82
  5. Step 5: Solve for x
    x = 597,955,605.82/27,622.87
  6. Step 6: Final answer
    x = 21,647.12

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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.