Home / 18,173.36-27,216.30-12,312.20

Finding the Fourth Proportional to 18,173.36, 27,216.30 and 12,312.20

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Solution

The fourth proportional to 18,173.36, 27,216.30 and 12,312.20 is: 18,438.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,173.36 : 27,216.30 = 12,312.20 : x
  2. Step 2: Convert to fraction form
    18,173.36/27,216.30 = 12,312.20/x
  3. Step 3: Cross multiply
    18,173.36x = 27,216.30 × 12,312.20
  4. Step 4: Simplify right side
    18,173.36x = 335,092,643.07
  5. Step 5: Solve for x
    x = 335,092,643.07/18,173.36
  6. Step 6: Final answer
    x = 18,438.67

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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.