Home / 10,889.40-16,334.10-4,312.20

Finding the Fourth Proportional to 10,889.40, 16,334.10 and 4,312.20

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Solution

The fourth proportional to 10,889.40, 16,334.10 and 4,312.20 is: 6,468.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,889.40 : 16,334.10 = 4,312.20 : x
  2. Step 2: Convert to fraction form
    10,889.40/16,334.10 = 4,312.20/x
  3. Step 3: Cross multiply
    10,889.40x = 16,334.10 × 4,312.20
  4. Step 4: Simplify right side
    10,889.40x = 70,435,906.02
  5. Step 5: Solve for x
    x = 70,435,906.02/10,889.40
  6. Step 6: Final answer
    x = 6,468.30

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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.