Home / 13,277.28-18,315.78-9,289.64

Finding the Fourth Proportional to 13,277.28, 18,315.78 and 9,289.64

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Solution

The fourth proportional to 13,277.28, 18,315.78 and 9,289.64 is: 12,814.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,277.28 : 18,315.78 = 9,289.64 : x
  2. Step 2: Convert to fraction form
    13,277.28/18,315.78 = 9,289.64/x
  3. Step 3: Cross multiply
    13,277.28x = 18,315.78 × 9,289.64
  4. Step 4: Simplify right side
    13,277.28x = 170,147,002.52
  5. Step 5: Solve for x
    x = 170,147,002.52/13,277.28
  6. Step 6: Final answer
    x = 12,814.90

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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.