Home / 10,742.88-16,109.40-6,990.96

Finding the Fourth Proportional to 10,742.88, 16,109.40 and 6,990.96

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Solution

The fourth proportional to 10,742.88, 16,109.40 and 6,990.96 is: 10,483.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,742.88 : 16,109.40 = 6,990.96 : x
  2. Step 2: Convert to fraction form
    10,742.88/16,109.40 = 6,990.96/x
  3. Step 3: Cross multiply
    10,742.88x = 16,109.40 × 6,990.96
  4. Step 4: Simplify right side
    10,742.88x = 112,620,171.02
  5. Step 5: Solve for x
    x = 112,620,171.02/10,742.88
  6. Step 6: Final answer
    x = 10,483.24

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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.