Home / 20,704.10-31,056.15-6,853.10

Finding the Fourth Proportional to 20,704.10, 31,056.15 and 6,853.10

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Solution

The fourth proportional to 20,704.10, 31,056.15 and 6,853.10 is: 10,279.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.10 : 31,056.15 = 6,853.10 : x
  2. Step 2: Convert to fraction form
    20,704.10/31,056.15 = 6,853.10/x
  3. Step 3: Cross multiply
    20,704.10x = 31,056.15 × 6,853.10
  4. Step 4: Simplify right side
    20,704.10x = 212,830,901.57
  5. Step 5: Solve for x
    x = 212,830,901.57/20,704.10
  6. Step 6: Final answer
    x = 10,279.65

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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.