Home / 20,220.69-27,931.77-18,334.41

Finding the Fourth Proportional to 20,220.69, 27,931.77 and 18,334.41

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Solution

The fourth proportional to 20,220.69, 27,931.77 and 18,334.41 is: 25,326.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.69 : 27,931.77 = 18,334.41 : x
  2. Step 2: Convert to fraction form
    20,220.69/27,931.77 = 18,334.41/x
  3. Step 3: Cross multiply
    20,220.69x = 27,931.77 × 18,334.41
  4. Step 4: Simplify right side
    20,220.69x = 512,112,523.21
  5. Step 5: Solve for x
    x = 512,112,523.21/20,220.69
  6. Step 6: Final answer
    x = 25,326.16

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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.