Home / 39,487.40-54,491.80-21,582.54

Finding the Fourth Proportional to 39,487.40, 54,491.80 and 21,582.54

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Solution

The fourth proportional to 39,487.40, 54,491.80 and 21,582.54 is: 29,783.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,487.40 : 54,491.80 = 21,582.54 : x
  2. Step 2: Convert to fraction form
    39,487.40/54,491.80 = 21,582.54/x
  3. Step 3: Cross multiply
    39,487.40x = 54,491.80 × 21,582.54
  4. Step 4: Simplify right side
    39,487.40x = 1,176,071,453.17
  5. Step 5: Solve for x
    x = 1,176,071,453.17/39,487.40
  6. Step 6: Final answer
    x = 29,783.46

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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.