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Finding the Fourth Proportional to 38,894.67, 53,675.03 and 21,895.61

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Solution

The fourth proportional to 38,894.67, 53,675.03 and 21,895.61 is: 30,216.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,894.67 : 53,675.03 = 21,895.61 : x
  2. Step 2: Convert to fraction form
    38,894.67/53,675.03 = 21,895.61/x
  3. Step 3: Cross multiply
    38,894.67x = 53,675.03 × 21,895.61
  4. Step 4: Simplify right side
    38,894.67x = 1,175,247,483.89
  5. Step 5: Solve for x
    x = 1,175,247,483.89/38,894.67
  6. Step 6: Final answer
    x = 30,216.15

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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.