Home / 11,155.39-16,700.21-9,771.43

Finding the Fourth Proportional to 11,155.39, 16,700.21 and 9,771.43

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Solution

The fourth proportional to 11,155.39, 16,700.21 and 9,771.43 is: 14,628.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.39 : 16,700.21 = 9,771.43 : x
  2. Step 2: Convert to fraction form
    11,155.39/16,700.21 = 9,771.43/x
  3. Step 3: Cross multiply
    11,155.39x = 16,700.21 × 9,771.43
  4. Step 4: Simplify right side
    11,155.39x = 163,184,842.39
  5. Step 5: Solve for x
    x = 163,184,842.39/11,155.39
  6. Step 6: Final answer
    x = 14,628.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.