Home / 20,726.88-28,606.08-11,772.60

Finding the Fourth Proportional to 20,726.88, 28,606.08 and 11,772.60

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Solution

The fourth proportional to 20,726.88, 28,606.08 and 11,772.60 is: 16,247.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.88 : 28,606.08 = 11,772.60 : x
  2. Step 2: Convert to fraction form
    20,726.88/28,606.08 = 11,772.60/x
  3. Step 3: Cross multiply
    20,726.88x = 28,606.08 × 11,772.60
  4. Step 4: Simplify right side
    20,726.88x = 336,767,937.41
  5. Step 5: Solve for x
    x = 336,767,937.41/20,726.88
  6. Step 6: Final answer
    x = 16,247.88

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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.