Home / 20,859.84-28,615.14-19,729.98

Finding the Fourth Proportional to 20,859.84, 28,615.14 and 19,729.98

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Solution

The fourth proportional to 20,859.84, 28,615.14 and 19,729.98 is: 27,065.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.84 : 28,615.14 = 19,729.98 : x
  2. Step 2: Convert to fraction form
    20,859.84/28,615.14 = 19,729.98/x
  3. Step 3: Cross multiply
    20,859.84x = 28,615.14 × 19,729.98
  4. Step 4: Simplify right side
    20,859.84x = 564,576,139.90
  5. Step 5: Solve for x
    x = 564,576,139.90/20,859.84
  6. Step 6: Final answer
    x = 27,065.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.