Home / 28,728.84-39,641.22-17,396.40

Finding the Fourth Proportional to 28,728.84, 39,641.22 and 17,396.40

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Solution

The fourth proportional to 28,728.84, 39,641.22 and 17,396.40 is: 24,004.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728.84 : 39,641.22 = 17,396.40 : x
  2. Step 2: Convert to fraction form
    28,728.84/39,641.22 = 17,396.40/x
  3. Step 3: Cross multiply
    28,728.84x = 39,641.22 × 17,396.40
  4. Step 4: Simplify right side
    28,728.84x = 689,614,519.61
  5. Step 5: Solve for x
    x = 689,614,519.61/28,728.84
  6. Step 6: Final answer
    x = 24,004.26

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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.