Home / 20,666.46-30,982.26-8,970.86

Finding the Fourth Proportional to 20,666.46, 30,982.26 and 8,970.86

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Solution

The fourth proportional to 20,666.46, 30,982.26 and 8,970.86 is: 13,448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,666.46 : 30,982.26 = 8,970.86 : x
  2. Step 2: Convert to fraction form
    20,666.46/30,982.26 = 8,970.86/x
  3. Step 3: Cross multiply
    20,666.46x = 30,982.26 × 8,970.86
  4. Step 4: Simplify right side
    20,666.46x = 277,937,516.94
  5. Step 5: Solve for x
    x = 277,937,516.94/20,666.46
  6. Step 6: Final answer
    x = 13,448.72

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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.