Home / 39,485.17-54,489.53-21,580.17

Finding the Fourth Proportional to 39,485.17, 54,489.53 and 21,580.17

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Solution

The fourth proportional to 39,485.17, 54,489.53 and 21,580.17 is: 29,780.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,485.17 : 54,489.53 = 21,580.17 : x
  2. Step 2: Convert to fraction form
    39,485.17/54,489.53 = 21,580.17/x
  3. Step 3: Cross multiply
    39,485.17x = 54,489.53 × 21,580.17
  4. Step 4: Simplify right side
    39,485.17x = 1,175,893,374.57
  5. Step 5: Solve for x
    x = 1,175,893,374.57/39,485.17
  6. Step 6: Final answer
    x = 29,780.64

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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.