Home / 39,119.19-53,984.07-21,214.05

Finding the Fourth Proportional to 39,119.19, 53,984.07 and 21,214.05

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Solution

The fourth proportional to 39,119.19, 53,984.07 and 21,214.05 is: 29,275.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,119.19 : 53,984.07 = 21,214.05 : x
  2. Step 2: Convert to fraction form
    39,119.19/53,984.07 = 21,214.05/x
  3. Step 3: Cross multiply
    39,119.19x = 53,984.07 × 21,214.05
  4. Step 4: Simplify right side
    39,119.19x = 1,145,220,760.18
  5. Step 5: Solve for x
    x = 1,145,220,760.18/39,119.19
  6. Step 6: Final answer
    x = 29,275.17

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Half scale
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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.