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Finding the Fourth Proportional to 18,464.40, 25,493.06 and 11,401.20

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Solution

The fourth proportional to 18,464.40, 25,493.06 and 11,401.20 is: 15,741.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,464.40 : 25,493.06 = 11,401.20 : x
  2. Step 2: Convert to fraction form
    18,464.40/25,493.06 = 11,401.20/x
  3. Step 3: Cross multiply
    18,464.40x = 25,493.06 × 11,401.20
  4. Step 4: Simplify right side
    18,464.40x = 290,651,475.67
  5. Step 5: Solve for x
    x = 290,651,475.67/18,464.40
  6. Step 6: Final answer
    x = 15,741.18

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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.