Home / 13,122.54-18,106.34-7,819.07

Finding the Fourth Proportional to 13,122.54, 18,106.34 and 7,819.07

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Solution

The fourth proportional to 13,122.54, 18,106.34 and 7,819.07 is: 10,788.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.54 : 18,106.34 = 7,819.07 : x
  2. Step 2: Convert to fraction form
    13,122.54/18,106.34 = 7,819.07/x
  3. Step 3: Cross multiply
    13,122.54x = 18,106.34 × 7,819.07
  4. Step 4: Simplify right side
    13,122.54x = 141,574,610.28
  5. Step 5: Solve for x
    x = 141,574,610.28/13,122.54
  6. Step 6: Final answer
    x = 10,788.66

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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.