Home / 39,011.83-53,836.24-21,106.78

Finding the Fourth Proportional to 39,011.83, 53,836.24 and 21,106.78

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Solution

The fourth proportional to 39,011.83, 53,836.24 and 21,106.78 is: 29,127.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,011.83 : 53,836.24 = 21,106.78 : x
  2. Step 2: Convert to fraction form
    39,011.83/53,836.24 = 21,106.78/x
  3. Step 3: Cross multiply
    39,011.83x = 53,836.24 × 21,106.78
  4. Step 4: Simplify right side
    39,011.83x = 1,136,309,673.71
  5. Step 5: Solve for x
    x = 1,136,309,673.71/39,011.83
  6. Step 6: Final answer
    x = 29,127.31

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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.