Home / 39,486.81-54,491.91-21,582.03

Finding the Fourth Proportional to 39,486.81, 54,491.91 and 21,582.03

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Solution

The fourth proportional to 39,486.81, 54,491.91 and 21,582.03 is: 29,783.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,486.81 : 54,491.91 = 21,582.03 : x
  2. Step 2: Convert to fraction form
    39,486.81/54,491.91 = 21,582.03/x
  3. Step 3: Cross multiply
    39,486.81x = 54,491.91 × 21,582.03
  4. Step 4: Simplify right side
    39,486.81x = 1,176,046,036.38
  5. Step 5: Solve for x
    x = 1,176,046,036.38/39,486.81
  6. Step 6: Final answer
    x = 29,783.26

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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.