Home / 21,159.36-31,739.91-17,454.69

Finding the Fourth Proportional to 21,159.36, 31,739.91 and 17,454.69

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Solution

The fourth proportional to 21,159.36, 31,739.91 and 17,454.69 is: 26,182.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.36 : 31,739.91 = 17,454.69 : x
  2. Step 2: Convert to fraction form
    21,159.36/31,739.91 = 17,454.69/x
  3. Step 3: Cross multiply
    21,159.36x = 31,739.91 × 17,454.69
  4. Step 4: Simplify right side
    21,159.36x = 554,010,289.68
  5. Step 5: Solve for x
    x = 554,010,289.68/21,159.36
  6. Step 6: Final answer
    x = 26,182.75

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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.