Home / 12,119.46-18,171.74-4,715.28

Finding the Fourth Proportional to 12,119.46, 18,171.74 and 4,715.28

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Solution

The fourth proportional to 12,119.46, 18,171.74 and 4,715.28 is: 7,070.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,119.46 : 18,171.74 = 4,715.28 : x
  2. Step 2: Convert to fraction form
    12,119.46/18,171.74 = 4,715.28/x
  3. Step 3: Cross multiply
    12,119.46x = 18,171.74 × 4,715.28
  4. Step 4: Simplify right side
    12,119.46x = 85,684,818.61
  5. Step 5: Solve for x
    x = 85,684,818.61/12,119.46
  6. Step 6: Final answer
    x = 7,070.02

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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.