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Finding the Fourth Proportional to 19,223.55, 28,789.16 and 9,838.89

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Solution

The fourth proportional to 19,223.55, 28,789.16 and 9,838.89 is: 14,734.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,223.55 : 28,789.16 = 9,838.89 : x
  2. Step 2: Convert to fraction form
    19,223.55/28,789.16 = 9,838.89/x
  3. Step 3: Cross multiply
    19,223.55x = 28,789.16 × 9,838.89
  4. Step 4: Simplify right side
    19,223.55x = 283,253,329.24
  5. Step 5: Solve for x
    x = 283,253,329.24/19,223.55
  6. Step 6: Final answer
    x = 14,734.70

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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.