Home / 39,673.90-54,748.15-21,768.46

Finding the Fourth Proportional to 39,673.90, 54,748.15 and 21,768.46

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Solution

The fourth proportional to 39,673.90, 54,748.15 and 21,768.46 is: 30,039.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,673.90 : 54,748.15 = 21,768.46 : x
  2. Step 2: Convert to fraction form
    39,673.90/54,748.15 = 21,768.46/x
  3. Step 3: Cross multiply
    39,673.90x = 54,748.15 × 21,768.46
  4. Step 4: Simplify right side
    39,673.90x = 1,191,782,913.35
  5. Step 5: Solve for x
    x = 1,191,782,913.35/39,673.90
  6. Step 6: Final answer
    x = 30,039.47

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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.