Home / 20,954.08-31,421.04-9,261.28

Finding the Fourth Proportional to 20,954.08, 31,421.04 and 9,261.28

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Solution

The fourth proportional to 20,954.08, 31,421.04 and 9,261.28 is: 13,887.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.08 : 31,421.04 = 9,261.28 : x
  2. Step 2: Convert to fraction form
    20,954.08/31,421.04 = 9,261.28/x
  3. Step 3: Cross multiply
    20,954.08x = 31,421.04 × 9,261.28
  4. Step 4: Simplify right side
    20,954.08x = 290,999,049.33
  5. Step 5: Solve for x
    x = 290,999,049.33/20,954.08
  6. Step 6: Final answer
    x = 13,887.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.