Home / 39,457.75-54,451.37-21,552.76

Finding the Fourth Proportional to 39,457.75, 54,451.37 and 21,552.76

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Solution

The fourth proportional to 39,457.75, 54,451.37 and 21,552.76 is: 29,742.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,457.75 : 54,451.37 = 21,552.76 : x
  2. Step 2: Convert to fraction form
    39,457.75/54,451.37 = 21,552.76/x
  3. Step 3: Cross multiply
    39,457.75x = 54,451.37 × 21,552.76
  4. Step 4: Simplify right side
    39,457.75x = 1,173,577,363.16
  5. Step 5: Solve for x
    x = 1,173,577,363.16/39,457.75
  6. Step 6: Final answer
    x = 29,742.63

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Half scale
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Double scale
Find fourth proportional to 39,458.75, 54,452.75 and 21,553.76
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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.