Home / 27,981.06-38,619.15-17,913.75

Finding the Fourth Proportional to 27,981.06, 38,619.15 and 17,913.75

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Solution

The fourth proportional to 27,981.06, 38,619.15 and 17,913.75 is: 24,724.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,981.06 : 38,619.15 = 17,913.75 : x
  2. Step 2: Convert to fraction form
    27,981.06/38,619.15 = 17,913.75/x
  3. Step 3: Cross multiply
    27,981.06x = 38,619.15 × 17,913.75
  4. Step 4: Simplify right side
    27,981.06x = 691,813,798.31
  5. Step 5: Solve for x
    x = 691,813,798.31/27,981.06
  6. Step 6: Final answer
    x = 24,724.36

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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.