Home / 39,022.40-53,850.54-21,117.05

Finding the Fourth Proportional to 39,022.40, 53,850.54 and 21,117.05

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Solution

The fourth proportional to 39,022.40, 53,850.54 and 21,117.05 is: 29,141.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,022.40 : 53,850.54 = 21,117.05 : x
  2. Step 2: Convert to fraction form
    39,022.40/53,850.54 = 21,117.05/x
  3. Step 3: Cross multiply
    39,022.40x = 53,850.54 × 21,117.05
  4. Step 4: Simplify right side
    39,022.40x = 1,137,164,276.45
  5. Step 5: Solve for x
    x = 1,137,164,276.45/39,022.40
  6. Step 6: Final answer
    x = 29,141.32

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Half scale
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Double scale
Find fourth proportional to 39,023.40, 53,851.92 and 21,118.05
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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.