Home / 13,771.76-19,005.10-8,106.75

Finding the Fourth Proportional to 13,771.76, 19,005.10 and 8,106.75

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Solution

The fourth proportional to 13,771.76, 19,005.10 and 8,106.75 is: 11,187.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.76 : 19,005.10 = 8,106.75 : x
  2. Step 2: Convert to fraction form
    13,771.76/19,005.10 = 8,106.75/x
  3. Step 3: Cross multiply
    13,771.76x = 19,005.10 × 8,106.75
  4. Step 4: Simplify right side
    13,771.76x = 154,069,574.16
  5. Step 5: Solve for x
    x = 154,069,574.16/13,771.76
  6. Step 6: Final answer
    x = 11,187.36

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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.