Home / 39,311.32-54,247.77-21,406.27

Finding the Fourth Proportional to 39,311.32, 54,247.77 and 21,406.27

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Solution

The fourth proportional to 39,311.32, 54,247.77 and 21,406.27 is: 29,539.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,311.32 : 54,247.77 = 21,406.27 : x
  2. Step 2: Convert to fraction form
    39,311.32/54,247.77 = 21,406.27/x
  3. Step 3: Cross multiply
    39,311.32x = 54,247.77 × 21,406.27
  4. Step 4: Simplify right side
    39,311.32x = 1,161,242,411.52
  5. Step 5: Solve for x
    x = 1,161,242,411.52/39,311.32
  6. Step 6: Final answer
    x = 29,539.64

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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.