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Finding the Fourth Proportional to 17,917.19, 26,686.53 and 16,980.42

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Solution

The fourth proportional to 17,917.19, 26,686.53 and 16,980.42 is: 25,291.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,917.19 : 26,686.53 = 16,980.42 : x
  2. Step 2: Convert to fraction form
    17,917.19/26,686.53 = 16,980.42/x
  3. Step 3: Cross multiply
    17,917.19x = 26,686.53 × 16,980.42
  4. Step 4: Simplify right side
    17,917.19x = 453,148,487.74
  5. Step 5: Solve for x
    x = 453,148,487.74/17,917.19
  6. Step 6: Final answer
    x = 25,291.27

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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.