Home / 12,130.10-16,739.43-6,824.81

Finding the Fourth Proportional to 12,130.10, 16,739.43 and 6,824.81

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Solution

The fourth proportional to 12,130.10, 16,739.43 and 6,824.81 is: 9,418.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,130.10 : 16,739.43 = 6,824.81 : x
  2. Step 2: Convert to fraction form
    12,130.10/16,739.43 = 6,824.81/x
  3. Step 3: Cross multiply
    12,130.10x = 16,739.43 × 6,824.81
  4. Step 4: Simplify right side
    12,130.10x = 114,243,408.94
  5. Step 5: Solve for x
    x = 114,243,408.94/12,130.10
  6. Step 6: Final answer
    x = 9,418.17

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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.