Home / 39,824.01-54,955.04-21,915.55

Finding the Fourth Proportional to 39,824.01, 54,955.04 and 21,915.55

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Solution

The fourth proportional to 39,824.01, 54,955.04 and 21,915.55 is: 30,242.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,824.01 : 54,955.04 = 21,915.55 : x
  2. Step 2: Convert to fraction form
    39,824.01/54,955.04 = 21,915.55/x
  3. Step 3: Cross multiply
    39,824.01x = 54,955.04 × 21,915.55
  4. Step 4: Simplify right side
    39,824.01x = 1,204,369,926.87
  5. Step 5: Solve for x
    x = 1,204,369,926.87/39,824.01
  6. Step 6: Final answer
    x = 30,242.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.