Home / 14,515.52-21,770.40-7,116.80

Finding the Fourth Proportional to 14,515.52, 21,770.40 and 7,116.80

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Solution

The fourth proportional to 14,515.52, 21,770.40 and 7,116.80 is: 10,673.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515.52 : 21,770.40 = 7,116.80 : x
  2. Step 2: Convert to fraction form
    14,515.52/21,770.40 = 7,116.80/x
  3. Step 3: Cross multiply
    14,515.52x = 21,770.40 × 7,116.80
  4. Step 4: Simplify right side
    14,515.52x = 154,935,582.72
  5. Step 5: Solve for x
    x = 154,935,582.72/14,515.52
  6. Step 6: Final answer
    x = 10,673.79

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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.