Home / 28,079.88-38,715.22-17,991.74

Finding the Fourth Proportional to 28,079.88, 38,715.22 and 17,991.74

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Solution

The fourth proportional to 28,079.88, 38,715.22 and 17,991.74 is: 24,806.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,079.88 : 38,715.22 = 17,991.74 : x
  2. Step 2: Convert to fraction form
    28,079.88/38,715.22 = 17,991.74/x
  3. Step 3: Cross multiply
    28,079.88x = 38,715.22 × 17,991.74
  4. Step 4: Simplify right side
    28,079.88x = 696,554,172.28
  5. Step 5: Solve for x
    x = 696,554,172.28/28,079.88
  6. Step 6: Final answer
    x = 24,806.17

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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.