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Finding the Fourth Proportional to 18,471.66, 25,518.69 and 12,113.34

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Solution

The fourth proportional to 18,471.66, 25,518.69 and 12,113.34 is: 16,734.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,471.66 : 25,518.69 = 12,113.34 : x
  2. Step 2: Convert to fraction form
    18,471.66/25,518.69 = 12,113.34/x
  3. Step 3: Cross multiply
    18,471.66x = 25,518.69 × 12,113.34
  4. Step 4: Simplify right side
    18,471.66x = 309,116,568.32
  5. Step 5: Solve for x
    x = 309,116,568.32/18,471.66
  6. Step 6: Final answer
    x = 16,734.64

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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.