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Finding the Fourth Proportional to 17,389.80, 26,034.30 and 13,026.60

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Solution

The fourth proportional to 17,389.80, 26,034.30 and 13,026.60 is: 19,502.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,389.80 : 26,034.30 = 13,026.60 : x
  2. Step 2: Convert to fraction form
    17,389.80/26,034.30 = 13,026.60/x
  3. Step 3: Cross multiply
    17,389.80x = 26,034.30 × 13,026.60
  4. Step 4: Simplify right side
    17,389.80x = 339,138,412.38
  5. Step 5: Solve for x
    x = 339,138,412.38/17,389.80
  6. Step 6: Final answer
    x = 19,502.15

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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.