Home / 21,020.28-31,533.45-6,975.54

Finding the Fourth Proportional to 21,020.28, 31,533.45 and 6,975.54

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Solution

The fourth proportional to 21,020.28, 31,533.45 and 6,975.54 is: 10,464.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.28 : 31,533.45 = 6,975.54 : x
  2. Step 2: Convert to fraction form
    21,020.28/31,533.45 = 6,975.54/x
  3. Step 3: Cross multiply
    21,020.28x = 31,533.45 × 6,975.54
  4. Step 4: Simplify right side
    21,020.28x = 219,962,841.81
  5. Step 5: Solve for x
    x = 219,962,841.81/21,020.28
  6. Step 6: Final answer
    x = 10,464.32

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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.