Home / 39,011.11-53,835.19-21,106.13

Finding the Fourth Proportional to 39,011.11, 53,835.19 and 21,106.13

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Solution

The fourth proportional to 39,011.11, 53,835.19 and 21,106.13 is: 29,126.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,011.11 : 53,835.19 = 21,106.13 : x
  2. Step 2: Convert to fraction form
    39,011.11/53,835.19 = 21,106.13/x
  3. Step 3: Cross multiply
    39,011.11x = 53,835.19 × 21,106.13
  4. Step 4: Simplify right side
    39,011.11x = 1,136,252,196.77
  5. Step 5: Solve for x
    x = 1,136,252,196.77/39,011.11
  6. Step 6: Final answer
    x = 29,126.38

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Double scale
Find fourth proportional to 39,012.11, 53,836.57 and 21,107.13
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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.