Home / 10,391.21-14,339.80-6,412.31

Finding the Fourth Proportional to 10,391.21, 14,339.80 and 6,412.31

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Solution

The fourth proportional to 10,391.21, 14,339.80 and 6,412.31 is: 8,848.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.21 : 14,339.80 = 6,412.31 : x
  2. Step 2: Convert to fraction form
    10,391.21/14,339.80 = 6,412.31/x
  3. Step 3: Cross multiply
    10,391.21x = 14,339.80 × 6,412.31
  4. Step 4: Simplify right side
    10,391.21x = 91,951,242.94
  5. Step 5: Solve for x
    x = 91,951,242.94/10,391.21
  6. Step 6: Final answer
    x = 8,848.94

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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.