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Finding the Fourth Proportional to 18,859.33, 28,285.35 and 17,922.70

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Solution

The fourth proportional to 18,859.33, 28,285.35 and 17,922.70 is: 26,880.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,859.33 : 28,285.35 = 17,922.70 : x
  2. Step 2: Convert to fraction form
    18,859.33/28,285.35 = 17,922.70/x
  3. Step 3: Cross multiply
    18,859.33x = 28,285.35 × 17,922.70
  4. Step 4: Simplify right side
    18,859.33x = 506,949,842.45
  5. Step 5: Solve for x
    x = 506,949,842.45/18,859.33
  6. Step 6: Final answer
    x = 26,880.59

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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.