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Finding the Fourth Proportional to 13,885.74, 20,853.48 and 12,773.10

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Solution

The fourth proportional to 13,885.74, 20,853.48 and 12,773.10 is: 19,182.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,885.74 : 20,853.48 = 12,773.10 : x
  2. Step 2: Convert to fraction form
    13,885.74/20,853.48 = 12,773.10/x
  3. Step 3: Cross multiply
    13,885.74x = 20,853.48 × 12,773.10
  4. Step 4: Simplify right side
    13,885.74x = 266,363,585.39
  5. Step 5: Solve for x
    x = 266,363,585.39/13,885.74
  6. Step 6: Final answer
    x = 19,182.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.