Home / 25,868.20-38,840.70-18,111.40

Finding the Fourth Proportional to 25,868.20, 38,840.70 and 18,111.40

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Solution

The fourth proportional to 25,868.20, 38,840.70 and 18,111.40 is: 27,193.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,868.20 : 38,840.70 = 18,111.40 : x
  2. Step 2: Convert to fraction form
    25,868.20/38,840.70 = 18,111.40/x
  3. Step 3: Cross multiply
    25,868.20x = 38,840.70 × 18,111.40
  4. Step 4: Simplify right side
    25,868.20x = 703,459,453.98
  5. Step 5: Solve for x
    x = 703,459,453.98/25,868.20
  6. Step 6: Final answer
    x = 27,193.99

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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.