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Finding the Fourth Proportional to 18,752.31, 28,122.93 and 8,888.94

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Solution

The fourth proportional to 18,752.31, 28,122.93 and 8,888.94 is: 13,330.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,752.31 : 28,122.93 = 8,888.94 : x
  2. Step 2: Convert to fraction form
    18,752.31/28,122.93 = 8,888.94/x
  3. Step 3: Cross multiply
    18,752.31x = 28,122.93 × 8,888.94
  4. Step 4: Simplify right side
    18,752.31x = 249,983,037.39
  5. Step 5: Solve for x
    x = 249,983,037.39/18,752.31
  6. Step 6: Final answer
    x = 13,330.79

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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.