Home / 18,426.20-25,408.08-12,447.50

Finding the Fourth Proportional to 18,426.20, 25,408.08 and 12,447.50

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Solution

The fourth proportional to 18,426.20, 25,408.08 and 12,447.50 is: 17,163.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,426.20 : 25,408.08 = 12,447.50 : x
  2. Step 2: Convert to fraction form
    18,426.20/25,408.08 = 12,447.50/x
  3. Step 3: Cross multiply
    18,426.20x = 25,408.08 × 12,447.50
  4. Step 4: Simplify right side
    18,426.20x = 316,267,075.80
  5. Step 5: Solve for x
    x = 316,267,075.80/18,426.20
  6. Step 6: Final answer
    x = 17,163.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.