Home / 19,138.12-26,398.69-13,159.42

Finding the Fourth Proportional to 19,138.12, 26,398.69 and 13,159.42

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Solution

The fourth proportional to 19,138.12, 26,398.69 and 13,159.42 is: 18,151.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,138.12 : 26,398.69 = 13,159.42 : x
  2. Step 2: Convert to fraction form
    19,138.12/26,398.69 = 13,159.42/x
  3. Step 3: Cross multiply
    19,138.12x = 26,398.69 × 13,159.42
  4. Step 4: Simplify right side
    19,138.12x = 347,391,350.26
  5. Step 5: Solve for x
    x = 347,391,350.26/19,138.12
  6. Step 6: Final answer
    x = 18,151.80

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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.