Home / 39,131.75-54,000.35-21,226.16

Finding the Fourth Proportional to 39,131.75, 54,000.35 and 21,226.16

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Solution

The fourth proportional to 39,131.75, 54,000.35 and 21,226.16 is: 29,291.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,131.75 : 54,000.35 = 21,226.16 : x
  2. Step 2: Convert to fraction form
    39,131.75/54,000.35 = 21,226.16/x
  3. Step 3: Cross multiply
    39,131.75x = 54,000.35 × 21,226.16
  4. Step 4: Simplify right side
    39,131.75x = 1,146,219,693.02
  5. Step 5: Solve for x
    x = 1,146,219,693.02/39,131.75
  6. Step 6: Final answer
    x = 29,291.30

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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.