Home / 15,137.68-20,889.60-8,423.32

Finding the Fourth Proportional to 15,137.68, 20,889.60 and 8,423.32

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Solution

The fourth proportional to 15,137.68, 20,889.60 and 8,423.32 is: 11,623.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,137.68 : 20,889.60 = 8,423.32 : x
  2. Step 2: Convert to fraction form
    15,137.68/20,889.60 = 8,423.32/x
  3. Step 3: Cross multiply
    15,137.68x = 20,889.60 × 8,423.32
  4. Step 4: Simplify right side
    15,137.68x = 175,959,785.47
  5. Step 5: Solve for x
    x = 175,959,785.47/15,137.68
  6. Step 6: Final answer
    x = 11,623.96

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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.