Home / 18,178.68-25,088.46-11,109.80

Finding the Fourth Proportional to 18,178.68, 25,088.46 and 11,109.80

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Solution

The fourth proportional to 18,178.68, 25,088.46 and 11,109.80 is: 15,332.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,178.68 : 25,088.46 = 11,109.80 : x
  2. Step 2: Convert to fraction form
    18,178.68/25,088.46 = 11,109.80/x
  3. Step 3: Cross multiply
    18,178.68x = 25,088.46 × 11,109.80
  4. Step 4: Simplify right side
    18,178.68x = 278,727,772.91
  5. Step 5: Solve for x
    x = 278,727,772.91/18,178.68
  6. Step 6: Final answer
    x = 15,332.67

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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.