Home / 13,939.27-19,235.80-7,651.64

Finding the Fourth Proportional to 13,939.27, 19,235.80 and 7,651.64

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Solution

The fourth proportional to 13,939.27, 19,235.80 and 7,651.64 is: 10,559.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,939.27 : 19,235.80 = 7,651.64 : x
  2. Step 2: Convert to fraction form
    13,939.27/19,235.80 = 7,651.64/x
  3. Step 3: Cross multiply
    13,939.27x = 19,235.80 × 7,651.64
  4. Step 4: Simplify right side
    13,939.27x = 147,185,416.71
  5. Step 5: Solve for x
    x = 147,185,416.71/13,939.27
  6. Step 6: Final answer
    x = 10,559.05

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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.