Home / 21,749.56-30,016.80-12,191.01

Finding the Fourth Proportional to 21,749.56, 30,016.80 and 12,191.01

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Solution

The fourth proportional to 21,749.56, 30,016.80 and 12,191.01 is: 16,824.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,749.56 : 30,016.80 = 12,191.01 : x
  2. Step 2: Convert to fraction form
    21,749.56/30,016.80 = 12,191.01/x
  3. Step 3: Cross multiply
    21,749.56x = 30,016.80 × 12,191.01
  4. Step 4: Simplify right side
    21,749.56x = 365,935,030.69
  5. Step 5: Solve for x
    x = 365,935,030.69/21,749.56
  6. Step 6: Final answer
    x = 16,824.94

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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.