Home / 21,283.16-31,946.60-20,495.84

Finding the Fourth Proportional to 21,283.16, 31,946.60 and 20,495.84

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Solution

The fourth proportional to 21,283.16, 31,946.60 and 20,495.84 is: 30,764.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,283.16 : 31,946.60 = 20,495.84 : x
  2. Step 2: Convert to fraction form
    21,283.16/31,946.60 = 20,495.84/x
  3. Step 3: Cross multiply
    21,283.16x = 31,946.60 × 20,495.84
  4. Step 4: Simplify right side
    21,283.16x = 654,772,293.65
  5. Step 5: Solve for x
    x = 654,772,293.65/21,283.16
  6. Step 6: Final answer
    x = 30,764.81

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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.