Home / 10,909.40-16,364.16-3,118.28

Finding the Fourth Proportional to 10,909.40, 16,364.16 and 3,118.28

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Solution

The fourth proportional to 10,909.40, 16,364.16 and 3,118.28 is: 4,677.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,909.40 : 16,364.16 = 3,118.28 : x
  2. Step 2: Convert to fraction form
    10,909.40/16,364.16 = 3,118.28/x
  3. Step 3: Cross multiply
    10,909.40x = 16,364.16 × 3,118.28
  4. Step 4: Simplify right side
    10,909.40x = 51,028,032.84
  5. Step 5: Solve for x
    x = 51,028,032.84/10,909.40
  6. Step 6: Final answer
    x = 4,677.44

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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.