Home / 15,209.83-20,989.34-8,495.56

Finding the Fourth Proportional to 15,209.83, 20,989.34 and 8,495.56

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Solution

The fourth proportional to 15,209.83, 20,989.34 and 8,495.56 is: 11,723.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,209.83 : 20,989.34 = 8,495.56 : x
  2. Step 2: Convert to fraction form
    15,209.83/20,989.34 = 8,495.56/x
  3. Step 3: Cross multiply
    15,209.83x = 20,989.34 × 8,495.56
  4. Step 4: Simplify right side
    15,209.83x = 178,316,166.10
  5. Step 5: Solve for x
    x = 178,316,166.10/15,209.83
  6. Step 6: Final answer
    x = 11,723.74

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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.