Home / 35,278.21-48,685.53-21,130.75

Finding the Fourth Proportional to 35,278.21, 48,685.53 and 21,130.75

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Solution

The fourth proportional to 35,278.21, 48,685.53 and 21,130.75 is: 29,161.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,278.21 : 48,685.53 = 21,130.75 : x
  2. Step 2: Convert to fraction form
    35,278.21/48,685.53 = 21,130.75/x
  3. Step 3: Cross multiply
    35,278.21x = 48,685.53 × 21,130.75
  4. Step 4: Simplify right side
    35,278.21x = 1,028,761,763.05
  5. Step 5: Solve for x
    x = 1,028,761,763.05/35,278.21
  6. Step 6: Final answer
    x = 29,161.39

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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.