Home / 28,486.60-39,315.16-17,161.98

Finding the Fourth Proportional to 28,486.60, 39,315.16 and 17,161.98

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Solution

The fourth proportional to 28,486.60, 39,315.16 and 17,161.98 is: 23,685.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,486.60 : 39,315.16 = 17,161.98 : x
  2. Step 2: Convert to fraction form
    28,486.60/39,315.16 = 17,161.98/x
  3. Step 3: Cross multiply
    28,486.60x = 39,315.16 × 17,161.98
  4. Step 4: Simplify right side
    28,486.60x = 674,725,989.62
  5. Step 5: Solve for x
    x = 674,725,989.62/28,486.60
  6. Step 6: Final answer
    x = 23,685.73

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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.