Home / 21,015.06-29,002.08-11,583.60

Finding the Fourth Proportional to 21,015.06, 29,002.08 and 11,583.60

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Solution

The fourth proportional to 21,015.06, 29,002.08 and 11,583.60 is: 15,986.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.06 : 29,002.08 = 11,583.60 : x
  2. Step 2: Convert to fraction form
    21,015.06/29,002.08 = 11,583.60/x
  3. Step 3: Cross multiply
    21,015.06x = 29,002.08 × 11,583.60
  4. Step 4: Simplify right side
    21,015.06x = 335,948,493.89
  5. Step 5: Solve for x
    x = 335,948,493.89/21,015.06
  6. Step 6: Final answer
    x = 15,986.08

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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.