Home / 39,120.06-53,985.21-21,214.85

Finding the Fourth Proportional to 39,120.06, 53,985.21 and 21,214.85

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Solution

The fourth proportional to 39,120.06, 53,985.21 and 21,214.85 is: 29,276.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,120.06 : 53,985.21 = 21,214.85 : x
  2. Step 2: Convert to fraction form
    39,120.06/53,985.21 = 21,214.85/x
  3. Step 3: Cross multiply
    39,120.06x = 53,985.21 × 21,214.85
  4. Step 4: Simplify right side
    39,120.06x = 1,145,288,132.37
  5. Step 5: Solve for x
    x = 1,145,288,132.37/39,120.06
  6. Step 6: Final answer
    x = 29,276.24

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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.