Home / 13,106.56-18,080.64-7,799.68

Finding the Fourth Proportional to 13,106.56, 18,080.64 and 7,799.68

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Solution

The fourth proportional to 13,106.56, 18,080.64 and 7,799.68 is: 10,759.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,106.56 : 18,080.64 = 7,799.68 : x
  2. Step 2: Convert to fraction form
    13,106.56/18,080.64 = 7,799.68/x
  3. Step 3: Cross multiply
    13,106.56x = 18,080.64 × 7,799.68
  4. Step 4: Simplify right side
    13,106.56x = 141,023,206.20
  5. Step 5: Solve for x
    x = 141,023,206.20/13,106.56
  6. Step 6: Final answer
    x = 10,759.74

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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.