Home / 14,221.18-21,346.80-7,986.52

Finding the Fourth Proportional to 14,221.18, 21,346.80 and 7,986.52

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Solution

The fourth proportional to 14,221.18, 21,346.80 and 7,986.52 is: 11,988.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,221.18 : 21,346.80 = 7,986.52 : x
  2. Step 2: Convert to fraction form
    14,221.18/21,346.80 = 7,986.52/x
  3. Step 3: Cross multiply
    14,221.18x = 21,346.80 × 7,986.52
  4. Step 4: Simplify right side
    14,221.18x = 170,486,645.14
  5. Step 5: Solve for x
    x = 170,486,645.14/14,221.18
  6. Step 6: Final answer
    x = 11,988.22

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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.