Home / 39,011.85-53,836.36-21,106.85

Finding the Fourth Proportional to 39,011.85, 53,836.36 and 21,106.85

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Solution

The fourth proportional to 39,011.85, 53,836.36 and 21,106.85 is: 29,127.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,011.85 : 53,836.36 = 21,106.85 : x
  2. Step 2: Convert to fraction form
    39,011.85/53,836.36 = 21,106.85/x
  3. Step 3: Cross multiply
    39,011.85x = 53,836.36 × 21,106.85
  4. Step 4: Simplify right side
    39,011.85x = 1,136,315,975.07
  5. Step 5: Solve for x
    x = 1,136,315,975.07/39,011.85
  6. Step 6: Final answer
    x = 29,127.46

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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.