Home / 21,760.79-32,639.36-8,609.63

Finding the Fourth Proportional to 21,760.79, 32,639.36 and 8,609.63

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Solution

The fourth proportional to 21,760.79, 32,639.36 and 8,609.63 is: 12,913.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,760.79 : 32,639.36 = 8,609.63 : x
  2. Step 2: Convert to fraction form
    21,760.79/32,639.36 = 8,609.63/x
  3. Step 3: Cross multiply
    21,760.79x = 32,639.36 × 8,609.63
  4. Step 4: Simplify right side
    21,760.79x = 281,012,606.79
  5. Step 5: Solve for x
    x = 281,012,606.79/21,760.79
  6. Step 6: Final answer
    x = 12,913.72

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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.