Home / 39,041.87-53,877.78-21,137.00

Finding the Fourth Proportional to 39,041.87, 53,877.78 and 21,137.00

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Solution

The fourth proportional to 39,041.87, 53,877.78 and 21,137.00 is: 29,169.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,041.87 : 53,877.78 = 21,137.00 : x
  2. Step 2: Convert to fraction form
    39,041.87/53,877.78 = 21,137.00/x
  3. Step 3: Cross multiply
    39,041.87x = 53,877.78 × 21,137.00
  4. Step 4: Simplify right side
    39,041.87x = 1,138,814,366.47
  5. Step 5: Solve for x
    x = 1,138,814,366.47/39,041.87
  6. Step 6: Final answer
    x = 29,169.06

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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.