Home / 39,069.28-53,915.60-21,164.40

Finding the Fourth Proportional to 39,069.28, 53,915.60 and 21,164.40

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Solution

The fourth proportional to 39,069.28, 53,915.60 and 21,164.40 is: 29,206.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,069.28 : 53,915.60 = 21,164.40 : x
  2. Step 2: Convert to fraction form
    39,069.28/53,915.60 = 21,164.40/x
  3. Step 3: Cross multiply
    39,069.28x = 53,915.60 × 21,164.40
  4. Step 4: Simplify right side
    39,069.28x = 1,141,091,324.64
  5. Step 5: Solve for x
    x = 1,141,091,324.64/39,069.28
  6. Step 6: Final answer
    x = 29,206.87

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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.