Home / 11,415.81-15,755.30-6,700.53

Finding the Fourth Proportional to 11,415.81, 15,755.30 and 6,700.53

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Solution

The fourth proportional to 11,415.81, 15,755.30 and 6,700.53 is: 9,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,415.81 : 15,755.30 = 6,700.53 : x
  2. Step 2: Convert to fraction form
    11,415.81/15,755.30 = 6,700.53/x
  3. Step 3: Cross multiply
    11,415.81x = 15,755.30 × 6,700.53
  4. Step 4: Simplify right side
    11,415.81x = 105,568,826.81
  5. Step 5: Solve for x
    x = 105,568,826.81/11,415.81
  6. Step 6: Final answer
    x = 9,247.60

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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.