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Finding the Fourth Proportional to 18,723, 28,092.70 and 8,869.32

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Solution

The fourth proportional to 18,723, 28,092.70 and 8,869.32 is: 13,307.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,723 : 28,092.70 = 8,869.32 : x
  2. Step 2: Convert to fraction form
    18,723/28,092.70 = 8,869.32/x
  3. Step 3: Cross multiply
    18,723x = 28,092.70 × 8,869.32
  4. Step 4: Simplify right side
    18,723x = 249,163,145.96
  5. Step 5: Solve for x
    x = 249,163,145.96/18,723
  6. Step 6: Final answer
    x = 13,307.86

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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.