Home / 14,653.45-20,221.61-7,938.66

Finding the Fourth Proportional to 14,653.45, 20,221.61 and 7,938.66

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Solution

The fourth proportional to 14,653.45, 20,221.61 and 7,938.66 is: 10,955.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,653.45 : 20,221.61 = 7,938.66 : x
  2. Step 2: Convert to fraction form
    14,653.45/20,221.61 = 7,938.66/x
  3. Step 3: Cross multiply
    14,653.45x = 20,221.61 × 7,938.66
  4. Step 4: Simplify right side
    14,653.45x = 160,532,486.44
  5. Step 5: Solve for x
    x = 160,532,486.44/14,653.45
  6. Step 6: Final answer
    x = 10,955.27

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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.