Home / 20,307.70-30,445.35-8,611.30

Finding the Fourth Proportional to 20,307.70, 30,445.35 and 8,611.30

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Solution

The fourth proportional to 20,307.70, 30,445.35 and 8,611.30 is: 12,910.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.70 : 30,445.35 = 8,611.30 : x
  2. Step 2: Convert to fraction form
    20,307.70/30,445.35 = 8,611.30/x
  3. Step 3: Cross multiply
    20,307.70x = 30,445.35 × 8,611.30
  4. Step 4: Simplify right side
    20,307.70x = 262,174,042.46
  5. Step 5: Solve for x
    x = 262,174,042.46/20,307.70
  6. Step 6: Final answer
    x = 12,910.08

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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.