Home / 9,905.53-13,669.97-5,429.28

Finding the Fourth Proportional to 9,905.53, 13,669.97 and 5,429.28

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Solution

The fourth proportional to 9,905.53, 13,669.97 and 5,429.28 is: 7,492.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,905.53 : 13,669.97 = 5,429.28 : x
  2. Step 2: Convert to fraction form
    9,905.53/13,669.97 = 5,429.28/x
  3. Step 3: Cross multiply
    9,905.53x = 13,669.97 × 5,429.28
  4. Step 4: Simplify right side
    9,905.53x = 74,218,072.48
  5. Step 5: Solve for x
    x = 74,218,072.48/9,905.53
  6. Step 6: Final answer
    x = 7,492.59

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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.