Home / 13,579.45-18,737.12-8,738.43

Finding the Fourth Proportional to 13,579.45, 18,737.12 and 8,738.43

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Solution

The fourth proportional to 13,579.45, 18,737.12 and 8,738.43 is: 12,057.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.45 : 18,737.12 = 8,738.43 : x
  2. Step 2: Convert to fraction form
    13,579.45/18,737.12 = 8,738.43/x
  3. Step 3: Cross multiply
    13,579.45x = 18,737.12 × 8,738.43
  4. Step 4: Simplify right side
    13,579.45x = 163,733,068.50
  5. Step 5: Solve for x
    x = 163,733,068.50/13,579.45
  6. Step 6: Final answer
    x = 12,057.42

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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.