Home / 38,622-53,292.36-21,621.72

Finding the Fourth Proportional to 38,622, 53,292.36 and 21,621.72

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Solution

The fourth proportional to 38,622, 53,292.36 and 21,621.72 is: 29,834.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,622 : 53,292.36 = 21,621.72 : x
  2. Step 2: Convert to fraction form
    38,622/53,292.36 = 21,621.72/x
  3. Step 3: Cross multiply
    38,622x = 53,292.36 × 21,621.72
  4. Step 4: Simplify right side
    38,622x = 1,152,272,486.06
  5. Step 5: Solve for x
    x = 1,152,272,486.06/38,622
  6. Step 6: Final answer
    x = 29,834.61

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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.