Home / 39,345.21-54,296.46-21,440.30

Finding the Fourth Proportional to 39,345.21, 54,296.46 and 21,440.30

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Solution

The fourth proportional to 39,345.21, 54,296.46 and 21,440.30 is: 29,587.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,345.21 : 54,296.46 = 21,440.30 : x
  2. Step 2: Convert to fraction form
    39,345.21/54,296.46 = 21,440.30/x
  3. Step 3: Cross multiply
    39,345.21x = 54,296.46 × 21,440.30
  4. Step 4: Simplify right side
    39,345.21x = 1,164,132,119.86
  5. Step 5: Solve for x
    x = 1,164,132,119.86/39,345.21
  6. Step 6: Final answer
    x = 29,587.65

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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.