Home / 21,790.12-30,066.36-14,630.43

Finding the Fourth Proportional to 21,790.12, 30,066.36 and 14,630.43

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Solution

The fourth proportional to 21,790.12, 30,066.36 and 14,630.43 is: 20,187.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790.12 : 30,066.36 = 14,630.43 : x
  2. Step 2: Convert to fraction form
    21,790.12/30,066.36 = 14,630.43/x
  3. Step 3: Cross multiply
    21,790.12x = 30,066.36 × 14,630.43
  4. Step 4: Simplify right side
    21,790.12x = 439,883,625.00
  5. Step 5: Solve for x
    x = 439,883,625.00/21,790.12
  6. Step 6: Final answer
    x = 20,187.30

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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.