Home / 10,943.10-16,390.35-8,999.10

Finding the Fourth Proportional to 10,943.10, 16,390.35 and 8,999.10

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Solution

The fourth proportional to 10,943.10, 16,390.35 and 8,999.10 is: 13,478.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,943.10 : 16,390.35 = 8,999.10 : x
  2. Step 2: Convert to fraction form
    10,943.10/16,390.35 = 8,999.10/x
  3. Step 3: Cross multiply
    10,943.10x = 16,390.35 × 8,999.10
  4. Step 4: Simplify right side
    10,943.10x = 147,498,398.69
  5. Step 5: Solve for x
    x = 147,498,398.69/10,943.10
  6. Step 6: Final answer
    x = 13,478.67

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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.