Home / 18,316.37-27,480.04-12,989.81

Finding the Fourth Proportional to 18,316.37, 27,480.04 and 12,989.81

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Solution

The fourth proportional to 18,316.37, 27,480.04 and 12,989.81 is: 19,488.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,316.37 : 27,480.04 = 12,989.81 : x
  2. Step 2: Convert to fraction form
    18,316.37/27,480.04 = 12,989.81/x
  3. Step 3: Cross multiply
    18,316.37x = 27,480.04 × 12,989.81
  4. Step 4: Simplify right side
    18,316.37x = 356,960,534.62
  5. Step 5: Solve for x
    x = 356,960,534.62/18,316.37
  6. Step 6: Final answer
    x = 19,488.60

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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.