Home / 12,489.89-17,235.51-6,824.55

Finding the Fourth Proportional to 12,489.89, 17,235.51 and 6,824.55

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Solution

The fourth proportional to 12,489.89, 17,235.51 and 6,824.55 is: 9,417.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.89 : 17,235.51 = 6,824.55 : x
  2. Step 2: Convert to fraction form
    12,489.89/17,235.51 = 6,824.55/x
  3. Step 3: Cross multiply
    12,489.89x = 17,235.51 × 6,824.55
  4. Step 4: Simplify right side
    12,489.89x = 117,624,535.14
  5. Step 5: Solve for x
    x = 117,624,535.14/12,489.89
  6. Step 6: Final answer
    x = 9,417.58

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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.