Home / 39,356.21-54,311.09-21,451.16

Finding the Fourth Proportional to 39,356.21, 54,311.09 and 21,451.16

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Solution

The fourth proportional to 39,356.21, 54,311.09 and 21,451.16 is: 29,602.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,356.21 : 54,311.09 = 21,451.16 : x
  2. Step 2: Convert to fraction form
    39,356.21/54,311.09 = 21,451.16/x
  3. Step 3: Cross multiply
    39,356.21x = 54,311.09 × 21,451.16
  4. Step 4: Simplify right side
    39,356.21x = 1,165,035,502.55
  5. Step 5: Solve for x
    x = 1,165,035,502.55/39,356.21
  6. Step 6: Final answer
    x = 29,602.33

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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.