Home / 28,715.88-39,628.74-17,387.43

Finding the Fourth Proportional to 28,715.88, 39,628.74 and 17,387.43

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Solution

The fourth proportional to 28,715.88, 39,628.74 and 17,387.43 is: 23,995.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715.88 : 39,628.74 = 17,387.43 : x
  2. Step 2: Convert to fraction form
    28,715.88/39,628.74 = 17,387.43/x
  3. Step 3: Cross multiply
    28,715.88x = 39,628.74 × 17,387.43
  4. Step 4: Simplify right side
    28,715.88x = 689,041,942.74
  5. Step 5: Solve for x
    x = 689,041,942.74/28,715.88
  6. Step 6: Final answer
    x = 23,995.15

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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.