Home / 30,546.02-42,109.34-21,443.66

Finding the Fourth Proportional to 30,546.02, 42,109.34 and 21,443.66

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Solution

The fourth proportional to 30,546.02, 42,109.34 and 21,443.66 is: 29,561.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,546.02 : 42,109.34 = 21,443.66 : x
  2. Step 2: Convert to fraction form
    30,546.02/42,109.34 = 21,443.66/x
  3. Step 3: Cross multiply
    30,546.02x = 42,109.34 × 21,443.66
  4. Step 4: Simplify right side
    30,546.02x = 902,978,447.64
  5. Step 5: Solve for x
    x = 902,978,447.64/30,546.02
  6. Step 6: Final answer
    x = 29,561.25

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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.