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Finding the Fourth Proportional to 35,641.76, 49,149.58 and 21,486.20

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Solution

The fourth proportional to 35,641.76, 49,149.58 and 21,486.20 is: 29,629.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,641.76 : 49,149.58 = 21,486.20 : x
  2. Step 2: Convert to fraction form
    35,641.76/49,149.58 = 21,486.20/x
  3. Step 3: Cross multiply
    35,641.76x = 49,149.58 × 21,486.20
  4. Step 4: Simplify right side
    35,641.76x = 1,056,037,705.80
  5. Step 5: Solve for x
    x = 1,056,037,705.80/35,641.76
  6. Step 6: Final answer
    x = 29,629.22

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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.