Home / 39,489.22-54,495-21,584.22

Finding the Fourth Proportional to 39,489.22, 54,495 and 21,584.22

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Solution

The fourth proportional to 39,489.22, 54,495 and 21,584.22 is: 29,786.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,489.22 : 54,495 = 21,584.22 : x
  2. Step 2: Convert to fraction form
    39,489.22/54,495 = 21,584.22/x
  3. Step 3: Cross multiply
    39,489.22x = 54,495 × 21,584.22
  4. Step 4: Simplify right side
    39,489.22x = 1,176,232,068.90
  5. Step 5: Solve for x
    x = 1,176,232,068.90/39,489.22
  6. Step 6: Final answer
    x = 29,786.16

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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.