Home / 14,718.57-20,311.20-8,345.75

Finding the Fourth Proportional to 14,718.57, 20,311.20 and 8,345.75

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Solution

The fourth proportional to 14,718.57, 20,311.20 and 8,345.75 is: 11,516.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,718.57 : 20,311.20 = 8,345.75 : x
  2. Step 2: Convert to fraction form
    14,718.57/20,311.20 = 8,345.75/x
  3. Step 3: Cross multiply
    14,718.57x = 20,311.20 × 8,345.75
  4. Step 4: Simplify right side
    14,718.57x = 169,512,197.40
  5. Step 5: Solve for x
    x = 169,512,197.40/14,718.57
  6. Step 6: Final answer
    x = 11,516.89

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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.