Home / 39,019.10-53,845.94-21,113.70

Finding the Fourth Proportional to 39,019.10, 53,845.94 and 21,113.70

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Solution

The fourth proportional to 39,019.10, 53,845.94 and 21,113.70 is: 29,136.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,019.10 : 53,845.94 = 21,113.70 : x
  2. Step 2: Convert to fraction form
    39,019.10/53,845.94 = 21,113.70/x
  3. Step 3: Cross multiply
    39,019.10x = 53,845.94 × 21,113.70
  4. Step 4: Simplify right side
    39,019.10x = 1,136,886,917.81
  5. Step 5: Solve for x
    x = 1,136,886,917.81/39,019.10
  6. Step 6: Final answer
    x = 29,136.68

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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.