Home / 55,915.04-83,887.14-20,855

Finding the Fourth Proportional to 55,915.04, 83,887.14 and 20,855

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Solution

The fourth proportional to 55,915.04, 83,887.14 and 20,855 is: 31,287.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,915.04 : 83,887.14 = 20,855 : x
  2. Step 2: Convert to fraction form
    55,915.04/83,887.14 = 20,855/x
  3. Step 3: Cross multiply
    55,915.04x = 83,887.14 × 20,855
  4. Step 4: Simplify right side
    55,915.04x = 1,749,466,304.70
  5. Step 5: Solve for x
    x = 1,749,466,304.70/55,915.04
  6. Step 6: Final answer
    x = 31,287.94

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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.