Home / 9,389.80-14,063.94-6,421.21

Finding the Fourth Proportional to 9,389.80, 14,063.94 and 6,421.21

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Solution

The fourth proportional to 9,389.80, 14,063.94 and 6,421.21 is: 9,617.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,389.80 : 14,063.94 = 6,421.21 : x
  2. Step 2: Convert to fraction form
    9,389.80/14,063.94 = 6,421.21/x
  3. Step 3: Cross multiply
    9,389.80x = 14,063.94 × 6,421.21
  4. Step 4: Simplify right side
    9,389.80x = 90,307,458.95
  5. Step 5: Solve for x
    x = 90,307,458.95/9,389.80
  6. Step 6: Final answer
    x = 9,617.61

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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.