Home / 39,636.50-54,698.24-21,731.45

Finding the Fourth Proportional to 39,636.50, 54,698.24 and 21,731.45

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Solution

The fourth proportional to 39,636.50, 54,698.24 and 21,731.45 is: 29,989.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,636.50 : 54,698.24 = 21,731.45 : x
  2. Step 2: Convert to fraction form
    39,636.50/54,698.24 = 21,731.45/x
  3. Step 3: Cross multiply
    39,636.50x = 54,698.24 × 21,731.45
  4. Step 4: Simplify right side
    39,636.50x = 1,188,671,685.50
  5. Step 5: Solve for x
    x = 1,188,671,685.50/39,636.50
  6. Step 6: Final answer
    x = 29,989.32

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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.