Home / 39,360.18-54,317.68-21,455.20

Finding the Fourth Proportional to 39,360.18, 54,317.68 and 21,455.20

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Solution

The fourth proportional to 39,360.18, 54,317.68 and 21,455.20 is: 29,608.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,360.18 : 54,317.68 = 21,455.20 : x
  2. Step 2: Convert to fraction form
    39,360.18/54,317.68 = 21,455.20/x
  3. Step 3: Cross multiply
    39,360.18x = 54,317.68 × 21,455.20
  4. Step 4: Simplify right side
    39,360.18x = 1,165,396,498.50
  5. Step 5: Solve for x
    x = 1,165,396,498.50/39,360.18
  6. Step 6: Final answer
    x = 29,608.52

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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.