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Finding the Fourth Proportional to 18,477, 25,483.14 and 11,405.16

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Solution

The fourth proportional to 18,477, 25,483.14 and 11,405.16 is: 15,729.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,477 : 25,483.14 = 11,405.16 : x
  2. Step 2: Convert to fraction form
    18,477/25,483.14 = 11,405.16/x
  3. Step 3: Cross multiply
    18,477x = 25,483.14 × 11,405.16
  4. Step 4: Simplify right side
    18,477x = 290,639,289.00
  5. Step 5: Solve for x
    x = 290,639,289.00/18,477
  6. Step 6: Final answer
    x = 15,729.79

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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.