Home / 21,008.34-28,990.44-11,575.08

Finding the Fourth Proportional to 21,008.34, 28,990.44 and 11,575.08

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Solution

The fourth proportional to 21,008.34, 28,990.44 and 11,575.08 is: 15,973.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,008.34 : 28,990.44 = 11,575.08 : x
  2. Step 2: Convert to fraction form
    21,008.34/28,990.44 = 11,575.08/x
  3. Step 3: Cross multiply
    21,008.34x = 28,990.44 × 11,575.08
  4. Step 4: Simplify right side
    21,008.34x = 335,566,662.24
  5. Step 5: Solve for x
    x = 335,566,662.24/21,008.34
  6. Step 6: Final answer
    x = 15,973.02

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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.