Home / 14,579.72-20,121.46-8,917.01

Finding the Fourth Proportional to 14,579.72, 20,121.46 and 8,917.01

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Solution

The fourth proportional to 14,579.72, 20,121.46 and 8,917.01 is: 12,306.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,579.72 : 20,121.46 = 8,917.01 : x
  2. Step 2: Convert to fraction form
    14,579.72/20,121.46 = 8,917.01/x
  3. Step 3: Cross multiply
    14,579.72x = 20,121.46 × 8,917.01
  4. Step 4: Simplify right side
    14,579.72x = 179,423,159.43
  5. Step 5: Solve for x
    x = 179,423,159.43/14,579.72
  6. Step 6: Final answer
    x = 12,306.36

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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.