Home / 18,586.20-27,857.70-7,487.40

Finding the Fourth Proportional to 18,586.20, 27,857.70 and 7,487.40

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Solution

The fourth proportional to 18,586.20, 27,857.70 and 7,487.40 is: 11,222.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,586.20 : 27,857.70 = 7,487.40 : x
  2. Step 2: Convert to fraction form
    18,586.20/27,857.70 = 7,487.40/x
  3. Step 3: Cross multiply
    18,586.20x = 27,857.70 × 7,487.40
  4. Step 4: Simplify right side
    18,586.20x = 208,581,742.98
  5. Step 5: Solve for x
    x = 208,581,742.98/18,586.20
  6. Step 6: Final answer
    x = 11,222.40

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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.