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Finding the Fourth Proportional to 28,122.99, 38,841.62 and 19,154.94

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Solution

The fourth proportional to 28,122.99, 38,841.62 and 19,154.94 is: 26,455.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.99 : 38,841.62 = 19,154.94 : x
  2. Step 2: Convert to fraction form
    28,122.99/38,841.62 = 19,154.94/x
  3. Step 3: Cross multiply
    28,122.99x = 38,841.62 × 19,154.94
  4. Step 4: Simplify right side
    28,122.99x = 744,008,900.60
  5. Step 5: Solve for x
    x = 744,008,900.60/28,122.99
  6. Step 6: Final answer
    x = 26,455.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.