Home / 21,068.05-31,591.95-6,271.78

Finding the Fourth Proportional to 21,068.05, 31,591.95 and 6,271.78

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Solution

The fourth proportional to 21,068.05, 31,591.95 and 6,271.78 is: 9,404.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,068.05 : 31,591.95 = 6,271.78 : x
  2. Step 2: Convert to fraction form
    21,068.05/31,591.95 = 6,271.78/x
  3. Step 3: Cross multiply
    21,068.05x = 31,591.95 × 6,271.78
  4. Step 4: Simplify right side
    21,068.05x = 198,137,760.17
  5. Step 5: Solve for x
    x = 198,137,760.17/21,068.05
  6. Step 6: Final answer
    x = 9,404.66

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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.