Home / 28,728.52-43,113.84-18,864.34

Finding the Fourth Proportional to 28,728.52, 43,113.84 and 18,864.34

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Solution

The fourth proportional to 28,728.52, 43,113.84 and 18,864.34 is: 28,310.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,728.52 : 43,113.84 = 18,864.34 : x
  2. Step 2: Convert to fraction form
    28,728.52/43,113.84 = 18,864.34/x
  3. Step 3: Cross multiply
    28,728.52x = 43,113.84 × 18,864.34
  4. Step 4: Simplify right side
    28,728.52x = 813,314,136.47
  5. Step 5: Solve for x
    x = 813,314,136.47/28,728.52
  6. Step 6: Final answer
    x = 28,310.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.