Home / 30,090.90-45,205.55-21,226.63

Finding the Fourth Proportional to 30,090.90, 45,205.55 and 21,226.63

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Solution

The fourth proportional to 30,090.90, 45,205.55 and 21,226.63 is: 31,888.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,090.90 : 45,205.55 = 21,226.63 : x
  2. Step 2: Convert to fraction form
    30,090.90/45,205.55 = 21,226.63/x
  3. Step 3: Cross multiply
    30,090.90x = 45,205.55 × 21,226.63
  4. Step 4: Simplify right side
    30,090.90x = 959,561,360.88
  5. Step 5: Solve for x
    x = 959,561,360.88/30,090.90
  6. Step 6: Final answer
    x = 31,888.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.