Home / 28,634-39,532.20-18,715.28

Finding the Fourth Proportional to 28,634, 39,532.20 and 18,715.28

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Solution

The fourth proportional to 28,634, 39,532.20 and 18,715.28 is: 25,838.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,634 : 39,532.20 = 18,715.28 : x
  2. Step 2: Convert to fraction form
    28,634/39,532.20 = 18,715.28/x
  3. Step 3: Cross multiply
    28,634x = 39,532.20 × 18,715.28
  4. Step 4: Simplify right side
    28,634x = 739,856,192.02
  5. Step 5: Solve for x
    x = 739,856,192.02/28,634
  6. Step 6: Final answer
    x = 25,838.38

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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.