Home / 18,119.54-27,178.10-4,970.81

Finding the Fourth Proportional to 18,119.54, 27,178.10 and 4,970.81

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Solution

The fourth proportional to 18,119.54, 27,178.10 and 4,970.81 is: 7,455.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,119.54 : 27,178.10 = 4,970.81 : x
  2. Step 2: Convert to fraction form
    18,119.54/27,178.10 = 4,970.81/x
  3. Step 3: Cross multiply
    18,119.54x = 27,178.10 × 4,970.81
  4. Step 4: Simplify right side
    18,119.54x = 135,097,232.99
  5. Step 5: Solve for x
    x = 135,097,232.99/18,119.54
  6. Step 6: Final answer
    x = 7,455.89

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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.