Home / 39,035.66-53,869.19-21,130.81

Finding the Fourth Proportional to 39,035.66, 53,869.19 and 21,130.81

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Solution

The fourth proportional to 39,035.66, 53,869.19 and 21,130.81 is: 29,160.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,035.66 : 53,869.19 = 21,130.81 : x
  2. Step 2: Convert to fraction form
    39,035.66/53,869.19 = 21,130.81/x
  3. Step 3: Cross multiply
    39,035.66x = 53,869.19 × 21,130.81
  4. Step 4: Simplify right side
    39,035.66x = 1,138,299,618.74
  5. Step 5: Solve for x
    x = 1,138,299,618.74/39,035.66
  6. Step 6: Final answer
    x = 29,160.51

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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.