Home / 14,660.79-20,231.39-8,688.92

Finding the Fourth Proportional to 14,660.79, 20,231.39 and 8,688.92

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Solution

The fourth proportional to 14,660.79, 20,231.39 and 8,688.92 is: 11,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,660.79 : 20,231.39 = 8,688.92 : x
  2. Step 2: Convert to fraction form
    14,660.79/20,231.39 = 8,688.92/x
  3. Step 3: Cross multiply
    14,660.79x = 20,231.39 × 8,688.92
  4. Step 4: Simplify right side
    14,660.79x = 175,788,784.60
  5. Step 5: Solve for x
    x = 175,788,784.60/14,660.79
  6. Step 6: Final answer
    x = 11,990.40

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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.