Home / 20,619.56-30,929.34-8,307.56

Finding the Fourth Proportional to 20,619.56, 30,929.34 and 8,307.56

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Solution

The fourth proportional to 20,619.56, 30,929.34 and 8,307.56 is: 12,461.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,619.56 : 30,929.34 = 8,307.56 : x
  2. Step 2: Convert to fraction form
    20,619.56/30,929.34 = 8,307.56/x
  3. Step 3: Cross multiply
    20,619.56x = 30,929.34 × 8,307.56
  4. Step 4: Simplify right side
    20,619.56x = 256,947,456.29
  5. Step 5: Solve for x
    x = 256,947,456.29/20,619.56
  6. Step 6: Final answer
    x = 12,461.34

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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.