Home / 14,921.12-20,591.65-8,207

Finding the Fourth Proportional to 14,921.12, 20,591.65 and 8,207

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Solution

The fourth proportional to 14,921.12, 20,591.65 and 8,207 is: 11,325.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,921.12 : 20,591.65 = 8,207 : x
  2. Step 2: Convert to fraction form
    14,921.12/20,591.65 = 8,207/x
  3. Step 3: Cross multiply
    14,921.12x = 20,591.65 × 8,207
  4. Step 4: Simplify right side
    14,921.12x = 168,995,671.55
  5. Step 5: Solve for x
    x = 168,995,671.55/14,921.12
  6. Step 6: Final answer
    x = 11,325.94

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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.