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Finding the Fourth Proportional to 18,882.88, 28,269.64 and 14,222.51

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Solution

The fourth proportional to 18,882.88, 28,269.64 and 14,222.51 is: 21,292.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,882.88 : 28,269.64 = 14,222.51 : x
  2. Step 2: Convert to fraction form
    18,882.88/28,269.64 = 14,222.51/x
  3. Step 3: Cross multiply
    18,882.88x = 28,269.64 × 14,222.51
  4. Step 4: Simplify right side
    18,882.88x = 402,065,272.71
  5. Step 5: Solve for x
    x = 402,065,272.71/18,882.88
  6. Step 6: Final answer
    x = 21,292.58

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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.