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Finding the Fourth Proportional to 28,009.26, 42,013.35 and 6,949.35

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Solution

The fourth proportional to 28,009.26, 42,013.35 and 6,949.35 is: 10,423.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,009.26 : 42,013.35 = 6,949.35 : x
  2. Step 2: Convert to fraction form
    28,009.26/42,013.35 = 6,949.35/x
  3. Step 3: Cross multiply
    28,009.26x = 42,013.35 × 6,949.35
  4. Step 4: Simplify right side
    28,009.26x = 291,965,473.82
  5. Step 5: Solve for x
    x = 291,965,473.82/28,009.26
  6. Step 6: Final answer
    x = 10,423.89

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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.