Home / 39,558.79-54,591.09-21,653.64

Finding the Fourth Proportional to 39,558.79, 54,591.09 and 21,653.64

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Solution

The fourth proportional to 39,558.79, 54,591.09 and 21,653.64 is: 29,882.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,558.79 : 54,591.09 = 21,653.64 : x
  2. Step 2: Convert to fraction form
    39,558.79/54,591.09 = 21,653.64/x
  3. Step 3: Cross multiply
    39,558.79x = 54,591.09 × 21,653.64
  4. Step 4: Simplify right side
    39,558.79x = 1,182,095,810.07
  5. Step 5: Solve for x
    x = 1,182,095,810.07/39,558.79
  6. Step 6: Final answer
    x = 29,882.00

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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.