Home / 9,139.80-13,670.07-5,382.63

Finding the Fourth Proportional to 9,139.80, 13,670.07 and 5,382.63

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Solution

The fourth proportional to 9,139.80, 13,670.07 and 5,382.63 is: 8,050.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,139.80 : 13,670.07 = 5,382.63 : x
  2. Step 2: Convert to fraction form
    9,139.80/13,670.07 = 5,382.63/x
  3. Step 3: Cross multiply
    9,139.80x = 13,670.07 × 5,382.63
  4. Step 4: Simplify right side
    9,139.80x = 73,580,928.88
  5. Step 5: Solve for x
    x = 73,580,928.88/9,139.80
  6. Step 6: Final answer
    x = 8,050.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.