Home / 10,903.30-16,363.23-7,989.22

Finding the Fourth Proportional to 10,903.30, 16,363.23 and 7,989.22

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Solution

The fourth proportional to 10,903.30, 16,363.23 and 7,989.22 is: 11,989.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,903.30 : 16,363.23 = 7,989.22 : x
  2. Step 2: Convert to fraction form
    10,903.30/16,363.23 = 7,989.22/x
  3. Step 3: Cross multiply
    10,903.30x = 16,363.23 × 7,989.22
  4. Step 4: Simplify right side
    10,903.30x = 130,729,444.38
  5. Step 5: Solve for x
    x = 130,729,444.38/10,903.30
  6. Step 6: Final answer
    x = 11,989.90

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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.