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Finding the Fourth Proportional to 18,315, 25,256.16 and 14,946.96

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Solution

The fourth proportional to 18,315, 25,256.16 and 14,946.96 is: 20,611.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315 : 25,256.16 = 14,946.96 : x
  2. Step 2: Convert to fraction form
    18,315/25,256.16 = 14,946.96/x
  3. Step 3: Cross multiply
    18,315x = 25,256.16 × 14,946.96
  4. Step 4: Simplify right side
    18,315x = 377,502,813.27
  5. Step 5: Solve for x
    x = 377,502,813.27/18,315
  6. Step 6: Final answer
    x = 20,611.67

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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.