Home / 20,836.84-31,246.83-7,686.28

Finding the Fourth Proportional to 20,836.84, 31,246.83 and 7,686.28

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Solution

The fourth proportional to 20,836.84, 31,246.83 and 7,686.28 is: 11,526.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.84 : 31,246.83 = 7,686.28 : x
  2. Step 2: Convert to fraction form
    20,836.84/31,246.83 = 7,686.28/x
  3. Step 3: Cross multiply
    20,836.84x = 31,246.83 × 7,686.28
  4. Step 4: Simplify right side
    20,836.84x = 240,171,728.26
  5. Step 5: Solve for x
    x = 240,171,728.26/20,836.84
  6. Step 6: Final answer
    x = 11,526.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.