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Finding the Fourth Proportional to 38,480.84, 53,104.61 and 21,484.43

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Solution

The fourth proportional to 38,480.84, 53,104.61 and 21,484.43 is: 29,649.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,480.84 : 53,104.61 = 21,484.43 : x
  2. Step 2: Convert to fraction form
    38,480.84/53,104.61 = 21,484.43/x
  3. Step 3: Cross multiply
    38,480.84x = 53,104.61 × 21,484.43
  4. Step 4: Simplify right side
    38,480.84x = 1,140,922,064.41
  5. Step 5: Solve for x
    x = 1,140,922,064.41/38,480.84
  6. Step 6: Final answer
    x = 29,649.10

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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.