Home / 10,647.21-14,699.04-6,399.30

Finding the Fourth Proportional to 10,647.21, 14,699.04 and 6,399.30

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Solution

The fourth proportional to 10,647.21, 14,699.04 and 6,399.30 is: 8,834.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,647.21 : 14,699.04 = 6,399.30 : x
  2. Step 2: Convert to fraction form
    10,647.21/14,699.04 = 6,399.30/x
  3. Step 3: Cross multiply
    10,647.21x = 14,699.04 × 6,399.30
  4. Step 4: Simplify right side
    10,647.21x = 94,063,566.67
  5. Step 5: Solve for x
    x = 94,063,566.67/10,647.21
  6. Step 6: Final answer
    x = 8,834.57

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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.