Home / 13,154.46-18,158.19-8,119.50

Finding the Fourth Proportional to 13,154.46, 18,158.19 and 8,119.50

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Solution

The fourth proportional to 13,154.46, 18,158.19 and 8,119.50 is: 11,208.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.46 : 18,158.19 = 8,119.50 : x
  2. Step 2: Convert to fraction form
    13,154.46/18,158.19 = 8,119.50/x
  3. Step 3: Cross multiply
    13,154.46x = 18,158.19 × 8,119.50
  4. Step 4: Simplify right side
    13,154.46x = 147,435,423.71
  5. Step 5: Solve for x
    x = 147,435,423.71/13,154.46
  6. Step 6: Final answer
    x = 11,208.02

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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.