Home / 21,015.36-29,000.16-11,583.68

Finding the Fourth Proportional to 21,015.36, 29,000.16 and 11,583.68

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Solution

The fourth proportional to 21,015.36, 29,000.16 and 11,583.68 is: 15,984.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.36 : 29,000.16 = 11,583.68 : x
  2. Step 2: Convert to fraction form
    21,015.36/29,000.16 = 11,583.68/x
  3. Step 3: Cross multiply
    21,015.36x = 29,000.16 × 11,583.68
  4. Step 4: Simplify right side
    21,015.36x = 335,928,573.39
  5. Step 5: Solve for x
    x = 335,928,573.39/21,015.36
  6. Step 6: Final answer
    x = 15,984.91

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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.