Home / 12,429.48-17,153.82-6,840.84

Finding the Fourth Proportional to 12,429.48, 17,153.82 and 6,840.84

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Solution

The fourth proportional to 12,429.48, 17,153.82 and 6,840.84 is: 9,440.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,429.48 : 17,153.82 = 6,840.84 : x
  2. Step 2: Convert to fraction form
    12,429.48/17,153.82 = 6,840.84/x
  3. Step 3: Cross multiply
    12,429.48x = 17,153.82 × 6,840.84
  4. Step 4: Simplify right side
    12,429.48x = 117,346,538.01
  5. Step 5: Solve for x
    x = 117,346,538.01/12,429.48
  6. Step 6: Final answer
    x = 9,440.99

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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.