Home / 13,465.20-18,579-8,747.76

Finding the Fourth Proportional to 13,465.20, 18,579 and 8,747.76

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Solution

The fourth proportional to 13,465.20, 18,579 and 8,747.76 is: 12,069.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465.20 : 18,579 = 8,747.76 : x
  2. Step 2: Convert to fraction form
    13,465.20/18,579 = 8,747.76/x
  3. Step 3: Cross multiply
    13,465.20x = 18,579 × 8,747.76
  4. Step 4: Simplify right side
    13,465.20x = 162,524,633.04
  5. Step 5: Solve for x
    x = 162,524,633.04/13,465.20
  6. Step 6: Final answer
    x = 12,069.98

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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.