Home / 37,636.40-51,945-21,718.64

Finding the Fourth Proportional to 37,636.40, 51,945 and 21,718.64

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Solution

The fourth proportional to 37,636.40, 51,945 and 21,718.64 is: 29,975.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,636.40 : 51,945 = 21,718.64 : x
  2. Step 2: Convert to fraction form
    37,636.40/51,945 = 21,718.64/x
  3. Step 3: Cross multiply
    37,636.40x = 51,945 × 21,718.64
  4. Step 4: Simplify right side
    37,636.40x = 1,128,174,754.80
  5. Step 5: Solve for x
    x = 1,128,174,754.80/37,636.40
  6. Step 6: Final answer
    x = 29,975.63

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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.