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Finding the Fourth Proportional to 14,681.44, 20,261 and 8,393.81

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Solution

The fourth proportional to 14,681.44, 20,261 and 8,393.81 is: 11,583.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,681.44 : 20,261 = 8,393.81 : x
  2. Step 2: Convert to fraction form
    14,681.44/20,261 = 8,393.81/x
  3. Step 3: Cross multiply
    14,681.44x = 20,261 × 8,393.81
  4. Step 4: Simplify right side
    14,681.44x = 170,066,984.41
  5. Step 5: Solve for x
    x = 170,066,984.41/14,681.44
  6. Step 6: Final answer
    x = 11,583.81

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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.