Home / 20,735.84-28,428.70-20,362.80

Finding the Fourth Proportional to 20,735.84, 28,428.70 and 20,362.80

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Solution

The fourth proportional to 20,735.84, 28,428.70 and 20,362.80 is: 27,917.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.84 : 28,428.70 = 20,362.80 : x
  2. Step 2: Convert to fraction form
    20,735.84/28,428.70 = 20,362.80/x
  3. Step 3: Cross multiply
    20,735.84x = 28,428.70 × 20,362.80
  4. Step 4: Simplify right side
    20,735.84x = 578,887,932.36
  5. Step 5: Solve for x
    x = 578,887,932.36/20,735.84
  6. Step 6: Final answer
    x = 27,917.26

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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.