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Finding the Fourth Proportional to 10,010.87, 15,017.01 and 2,990.80

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Solution

The fourth proportional to 10,010.87, 15,017.01 and 2,990.80 is: 4,486.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,010.87 : 15,017.01 = 2,990.80 : x
  2. Step 2: Convert to fraction form
    10,010.87/15,017.01 = 2,990.80/x
  3. Step 3: Cross multiply
    10,010.87x = 15,017.01 × 2,990.80
  4. Step 4: Simplify right side
    10,010.87x = 44,912,835.97
  5. Step 5: Solve for x
    x = 44,912,835.97/10,010.87
  6. Step 6: Final answer
    x = 4,486.41

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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.