Home / 10,137.50-15,214.08-5,211.44

Finding the Fourth Proportional to 10,137.50, 15,214.08 and 5,211.44

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Solution

The fourth proportional to 10,137.50, 15,214.08 and 5,211.44 is: 7,821.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,137.50 : 15,214.08 = 5,211.44 : x
  2. Step 2: Convert to fraction form
    10,137.50/15,214.08 = 5,211.44/x
  3. Step 3: Cross multiply
    10,137.50x = 15,214.08 × 5,211.44
  4. Step 4: Simplify right side
    10,137.50x = 79,287,162.95
  5. Step 5: Solve for x
    x = 79,287,162.95/10,137.50
  6. Step 6: Final answer
    x = 7,821.18

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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.