Home / 21,008.44-28,990.74-11,577.16

Finding the Fourth Proportional to 21,008.44, 28,990.74 and 11,577.16

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Solution

The fourth proportional to 21,008.44, 28,990.74 and 11,577.16 is: 15,975.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.44 : 28,990.74 = 11,577.16 : x
  2. Step 2: Convert to fraction form
    21,008.44/28,990.74 = 11,577.16/x
  3. Step 3: Cross multiply
    21,008.44x = 28,990.74 × 11,577.16
  4. Step 4: Simplify right side
    21,008.44x = 335,630,435.50
  5. Step 5: Solve for x
    x = 335,630,435.50/21,008.44
  6. Step 6: Final answer
    x = 15,975.98

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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.