Home / 38,705.55-53,417.84-21,936.75

Finding the Fourth Proportional to 38,705.55, 53,417.84 and 21,936.75

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Solution

The fourth proportional to 38,705.55, 53,417.84 and 21,936.75 is: 30,275.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,705.55 : 53,417.84 = 21,936.75 : x
  2. Step 2: Convert to fraction form
    38,705.55/53,417.84 = 21,936.75/x
  3. Step 3: Cross multiply
    38,705.55x = 53,417.84 × 21,936.75
  4. Step 4: Simplify right side
    38,705.55x = 1,171,813,691.94
  5. Step 5: Solve for x
    x = 1,171,813,691.94/38,705.55
  6. Step 6: Final answer
    x = 30,275.08

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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.