Home / 10,211.90-15,303.60-5,521.80

Finding the Fourth Proportional to 10,211.90, 15,303.60 and 5,521.80

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Solution

The fourth proportional to 10,211.90, 15,303.60 and 5,521.80 is: 8,274.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,211.90 : 15,303.60 = 5,521.80 : x
  2. Step 2: Convert to fraction form
    10,211.90/15,303.60 = 5,521.80/x
  3. Step 3: Cross multiply
    10,211.90x = 15,303.60 × 5,521.80
  4. Step 4: Simplify right side
    10,211.90x = 84,503,418.48
  5. Step 5: Solve for x
    x = 84,503,418.48/10,211.90
  6. Step 6: Final answer
    x = 8,274.99

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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.