Home / 21,770.19-30,040.19-13,269.24

Finding the Fourth Proportional to 21,770.19, 30,040.19 and 13,269.24

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Solution

The fourth proportional to 21,770.19, 30,040.19 and 13,269.24 is: 18,309.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,770.19 : 30,040.19 = 13,269.24 : x
  2. Step 2: Convert to fraction form
    21,770.19/30,040.19 = 13,269.24/x
  3. Step 3: Cross multiply
    21,770.19x = 30,040.19 × 13,269.24
  4. Step 4: Simplify right side
    21,770.19x = 398,610,474.17
  5. Step 5: Solve for x
    x = 398,610,474.17/21,770.19
  6. Step 6: Final answer
    x = 18,309.92

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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.