Home / 39,390.44-54,360.18-21,486.47

Finding the Fourth Proportional to 39,390.44, 54,360.18 and 21,486.47

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Solution

The fourth proportional to 39,390.44, 54,360.18 and 21,486.47 is: 29,652.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,390.44 : 54,360.18 = 21,486.47 : x
  2. Step 2: Convert to fraction form
    39,390.44/54,360.18 = 21,486.47/x
  3. Step 3: Cross multiply
    39,390.44x = 54,360.18 × 21,486.47
  4. Step 4: Simplify right side
    39,390.44x = 1,168,008,104.96
  5. Step 5: Solve for x
    x = 1,168,008,104.96/39,390.44
  6. Step 6: Final answer
    x = 29,652.07

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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.