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Finding the Fourth Proportional to 13,752.81, 20,506.59 and 12,675.71

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Solution

The fourth proportional to 13,752.81, 20,506.59 and 12,675.71 is: 18,900.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,752.81 : 20,506.59 = 12,675.71 : x
  2. Step 2: Convert to fraction form
    13,752.81/20,506.59 = 12,675.71/x
  3. Step 3: Cross multiply
    13,752.81x = 20,506.59 × 12,675.71
  4. Step 4: Simplify right side
    13,752.81x = 259,935,587.93
  5. Step 5: Solve for x
    x = 259,935,587.93/13,752.81
  6. Step 6: Final answer
    x = 18,900.54

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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.