Home / 21,741.01-30,001.73-12,309.57

Finding the Fourth Proportional to 21,741.01, 30,001.73 and 12,309.57

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Solution

The fourth proportional to 21,741.01, 30,001.73 and 12,309.57 is: 16,986.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,741.01 : 30,001.73 = 12,309.57 : x
  2. Step 2: Convert to fraction form
    21,741.01/30,001.73 = 12,309.57/x
  3. Step 3: Cross multiply
    21,741.01x = 30,001.73 × 12,309.57
  4. Step 4: Simplify right side
    21,741.01x = 369,308,184.00
  5. Step 5: Solve for x
    x = 369,308,184.00/21,741.01
  6. Step 6: Final answer
    x = 16,986.71

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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.