Home / 13,624.88-18,806.65-9,909.68

Finding the Fourth Proportional to 13,624.88, 18,806.65 and 9,909.68

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Solution

The fourth proportional to 13,624.88, 18,806.65 and 9,909.68 is: 13,678.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,624.88 : 18,806.65 = 9,909.68 : x
  2. Step 2: Convert to fraction form
    13,624.88/18,806.65 = 9,909.68/x
  3. Step 3: Cross multiply
    13,624.88x = 18,806.65 × 9,909.68
  4. Step 4: Simplify right side
    13,624.88x = 186,367,764.56
  5. Step 5: Solve for x
    x = 186,367,764.56/13,624.88
  6. Step 6: Final answer
    x = 13,678.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.