Home / 14,660.16-20,228.04-8,689.20

Finding the Fourth Proportional to 14,660.16, 20,228.04 and 8,689.20

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Solution

The fourth proportional to 14,660.16, 20,228.04 and 8,689.20 is: 11,989.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,660.16 : 20,228.04 = 8,689.20 : x
  2. Step 2: Convert to fraction form
    14,660.16/20,228.04 = 8,689.20/x
  3. Step 3: Cross multiply
    14,660.16x = 20,228.04 × 8,689.20
  4. Step 4: Simplify right side
    14,660.16x = 175,765,485.17
  5. Step 5: Solve for x
    x = 175,765,485.17/14,660.16
  6. Step 6: Final answer
    x = 11,989.33

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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.