Home / 39,363.08-54,319.41-21,457.69

Finding the Fourth Proportional to 39,363.08, 54,319.41 and 21,457.69

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Solution

The fourth proportional to 39,363.08, 54,319.41 and 21,457.69 is: 29,610.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,363.08 : 54,319.41 = 21,457.69 : x
  2. Step 2: Convert to fraction form
    39,363.08/54,319.41 = 21,457.69/x
  3. Step 3: Cross multiply
    39,363.08x = 54,319.41 × 21,457.69
  4. Step 4: Simplify right side
    39,363.08x = 1,165,568,924.96
  5. Step 5: Solve for x
    x = 1,165,568,924.96/39,363.08
  6. Step 6: Final answer
    x = 29,610.72

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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.