Home / 21,015.08-29,000.81-11,583.80

Finding the Fourth Proportional to 21,015.08, 29,000.81 and 11,583.80

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Solution

The fourth proportional to 21,015.08, 29,000.81 and 11,583.80 is: 15,985.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,015.08 : 29,000.81 = 11,583.80 : x
  2. Step 2: Convert to fraction form
    21,015.08/29,000.81 = 11,583.80/x
  3. Step 3: Cross multiply
    21,015.08x = 29,000.81 × 11,583.80
  4. Step 4: Simplify right side
    21,015.08x = 335,939,524.96
  5. Step 5: Solve for x
    x = 335,939,524.96/21,015.08
  6. Step 6: Final answer
    x = 15,985.64

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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.