Home / 16,719.87-23,068.76-13,172.07

Finding the Fourth Proportional to 16,719.87, 23,068.76 and 13,172.07

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Solution

The fourth proportional to 16,719.87, 23,068.76 and 13,172.07 is: 18,173.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,719.87 : 23,068.76 = 13,172.07 : x
  2. Step 2: Convert to fraction form
    16,719.87/23,068.76 = 13,172.07/x
  3. Step 3: Cross multiply
    16,719.87x = 23,068.76 × 13,172.07
  4. Step 4: Simplify right side
    16,719.87x = 303,863,255.67
  5. Step 5: Solve for x
    x = 303,863,255.67/16,719.87
  6. Step 6: Final answer
    x = 18,173.78

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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.