Home / 38,865.53-53,633.26-21,870.72

Finding the Fourth Proportional to 38,865.53, 53,633.26 and 21,870.72

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Solution

The fourth proportional to 38,865.53, 53,633.26 and 21,870.72 is: 30,180.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,865.53 : 53,633.26 = 21,870.72 : x
  2. Step 2: Convert to fraction form
    38,865.53/53,633.26 = 21,870.72/x
  3. Step 3: Cross multiply
    38,865.53x = 53,633.26 × 21,870.72
  4. Step 4: Simplify right side
    38,865.53x = 1,172,998,012.15
  5. Step 5: Solve for x
    x = 1,172,998,012.15/38,865.53
  6. Step 6: Final answer
    x = 30,180.93

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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.