Home / 39,170.08-54,055.38-21,265.10

Finding the Fourth Proportional to 39,170.08, 54,055.38 and 21,265.10

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Solution

The fourth proportional to 39,170.08, 54,055.38 and 21,265.10 is: 29,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,170.08 : 54,055.38 = 21,265.10 : x
  2. Step 2: Convert to fraction form
    39,170.08/54,055.38 = 21,265.10/x
  3. Step 3: Cross multiply
    39,170.08x = 54,055.38 × 21,265.10
  4. Step 4: Simplify right side
    39,170.08x = 1,149,493,061.24
  5. Step 5: Solve for x
    x = 1,149,493,061.24/39,170.08
  6. Step 6: Final answer
    x = 29,346.20

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Half scale
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Double scale
Find fourth proportional to 39,171.08, 54,056.76 and 21,266.10
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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.