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Finding the Fourth Proportional to 13,248, 18,282.24 and 12,258.72

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Solution

The fourth proportional to 13,248, 18,282.24 and 12,258.72 is: 16,917.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,248 : 18,282.24 = 12,258.72 : x
  2. Step 2: Convert to fraction form
    13,248/18,282.24 = 12,258.72/x
  3. Step 3: Cross multiply
    13,248x = 18,282.24 × 12,258.72
  4. Step 4: Simplify right side
    13,248x = 224,116,861.13
  5. Step 5: Solve for x
    x = 224,116,861.13/13,248
  6. Step 6: Final answer
    x = 16,917.03

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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.