Home / 38,385.44-52,971.78-21,390.41

Finding the Fourth Proportional to 38,385.44, 52,971.78 and 21,390.41

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Solution

The fourth proportional to 38,385.44, 52,971.78 and 21,390.41 is: 29,518.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,385.44 : 52,971.78 = 21,390.41 : x
  2. Step 2: Convert to fraction form
    38,385.44/52,971.78 = 21,390.41/x
  3. Step 3: Cross multiply
    38,385.44x = 52,971.78 × 21,390.41
  4. Step 4: Simplify right side
    38,385.44x = 1,133,088,092.63
  5. Step 5: Solve for x
    x = 1,133,088,092.63/38,385.44
  6. Step 6: Final answer
    x = 29,518.69

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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.