Home / 21,019.26-29,007.87-11,587.81

Finding the Fourth Proportional to 21,019.26, 29,007.87 and 11,587.81

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Solution

The fourth proportional to 21,019.26, 29,007.87 and 11,587.81 is: 15,991.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,019.26 : 29,007.87 = 11,587.81 : x
  2. Step 2: Convert to fraction form
    21,019.26/29,007.87 = 11,587.81/x
  3. Step 3: Cross multiply
    21,019.26x = 29,007.87 × 11,587.81
  4. Step 4: Simplify right side
    21,019.26x = 336,137,686.06
  5. Step 5: Solve for x
    x = 336,137,686.06/21,019.26
  6. Step 6: Final answer
    x = 15,991.89

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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.