Home / 13,069.96-18,030.66-7,761.76

Finding the Fourth Proportional to 13,069.96, 18,030.66 and 7,761.76

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Solution

The fourth proportional to 13,069.96, 18,030.66 and 7,761.76 is: 10,707.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,069.96 : 18,030.66 = 7,761.76 : x
  2. Step 2: Convert to fraction form
    13,069.96/18,030.66 = 7,761.76/x
  3. Step 3: Cross multiply
    13,069.96x = 18,030.66 × 7,761.76
  4. Step 4: Simplify right side
    13,069.96x = 139,949,655.56
  5. Step 5: Solve for x
    x = 139,949,655.56/13,069.96
  6. Step 6: Final answer
    x = 10,707.73

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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.