Home / 21,306.60-31,964.70-6,516.20

Finding the Fourth Proportional to 21,306.60, 31,964.70 and 6,516.20

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Solution

The fourth proportional to 21,306.60, 31,964.70 and 6,516.20 is: 9,775.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,306.60 : 31,964.70 = 6,516.20 : x
  2. Step 2: Convert to fraction form
    21,306.60/31,964.70 = 6,516.20/x
  3. Step 3: Cross multiply
    21,306.60x = 31,964.70 × 6,516.20
  4. Step 4: Simplify right side
    21,306.60x = 208,288,378.14
  5. Step 5: Solve for x
    x = 208,288,378.14/21,306.60
  6. Step 6: Final answer
    x = 9,775.77

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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.