Home / 18,145.92-27,218.40-4,999.20

Finding the Fourth Proportional to 18,145.92, 27,218.40 and 4,999.20

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Solution

The fourth proportional to 18,145.92, 27,218.40 and 4,999.20 is: 7,498.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,145.92 : 27,218.40 = 4,999.20 : x
  2. Step 2: Convert to fraction form
    18,145.92/27,218.40 = 4,999.20/x
  3. Step 3: Cross multiply
    18,145.92x = 27,218.40 × 4,999.20
  4. Step 4: Simplify right side
    18,145.92x = 136,070,225.28
  5. Step 5: Solve for x
    x = 136,070,225.28/18,145.92
  6. Step 6: Final answer
    x = 7,498.67

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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.