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Finding the Fourth Proportional to 13,807.77, 20,607.33 and 12,871.41

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Solution

The fourth proportional to 13,807.77, 20,607.33 and 12,871.41 is: 19,209.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807.77 : 20,607.33 = 12,871.41 : x
  2. Step 2: Convert to fraction form
    13,807.77/20,607.33 = 12,871.41/x
  3. Step 3: Cross multiply
    13,807.77x = 20,607.33 × 12,871.41
  4. Step 4: Simplify right side
    13,807.77x = 265,245,393.44
  5. Step 5: Solve for x
    x = 265,245,393.44/13,807.77
  6. Step 6: Final answer
    x = 19,209.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.