Home / 28,218.05-42,326.64-6,870.96

Finding the Fourth Proportional to 28,218.05, 42,326.64 and 6,870.96

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Solution

The fourth proportional to 28,218.05, 42,326.64 and 6,870.96 is: 10,306.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218.05 : 42,326.64 = 6,870.96 : x
  2. Step 2: Convert to fraction form
    28,218.05/42,326.64 = 6,870.96/x
  3. Step 3: Cross multiply
    28,218.05x = 42,326.64 × 6,870.96
  4. Step 4: Simplify right side
    28,218.05x = 290,824,834.87
  5. Step 5: Solve for x
    x = 290,824,834.87/28,218.05
  6. Step 6: Final answer
    x = 10,306.34

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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.