Home / 39,054.40-53,894.80-21,149.00

Finding the Fourth Proportional to 39,054.40, 53,894.80 and 21,149.00

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Solution

The fourth proportional to 39,054.40, 53,894.80 and 21,149.00 is: 29,185.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,054.40 : 53,894.80 = 21,149.00 : x
  2. Step 2: Convert to fraction form
    39,054.40/53,894.80 = 21,149.00/x
  3. Step 3: Cross multiply
    39,054.40x = 53,894.80 × 21,149.00
  4. Step 4: Simplify right side
    39,054.40x = 1,139,820,855.73
  5. Step 5: Solve for x
    x = 1,139,820,855.73/39,054.40
  6. Step 6: Final answer
    x = 29,185.47

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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.