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Finding the Fourth Proportional to 17,719.50, 26,449.63 and 15,617.68

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Solution

The fourth proportional to 17,719.50, 26,449.63 and 15,617.68 is: 23,312.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,719.50 : 26,449.63 = 15,617.68 : x
  2. Step 2: Convert to fraction form
    17,719.50/26,449.63 = 15,617.68/x
  3. Step 3: Cross multiply
    17,719.50x = 26,449.63 × 15,617.68
  4. Step 4: Simplify right side
    17,719.50x = 413,081,857.46
  5. Step 5: Solve for x
    x = 413,081,857.46/17,719.50
  6. Step 6: Final answer
    x = 23,312.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.