Home / 13,121.58-19,682.10-4,356.57

Finding the Fourth Proportional to 13,121.58, 19,682.10 and 4,356.57

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Solution

The fourth proportional to 13,121.58, 19,682.10 and 4,356.57 is: 6,534.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.58 : 19,682.10 = 4,356.57 : x
  2. Step 2: Convert to fraction form
    13,121.58/19,682.10 = 4,356.57/x
  3. Step 3: Cross multiply
    13,121.58x = 19,682.10 × 4,356.57
  4. Step 4: Simplify right side
    13,121.58x = 85,746,446.40
  5. Step 5: Solve for x
    x = 85,746,446.40/13,121.58
  6. Step 6: Final answer
    x = 6,534.77

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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.