Home / 9,729.68-13,428.72-5,537.84

Finding the Fourth Proportional to 9,729.68, 13,428.72 and 5,537.84

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Solution

The fourth proportional to 9,729.68, 13,428.72 and 5,537.84 is: 7,643.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,729.68 : 13,428.72 = 5,537.84 : x
  2. Step 2: Convert to fraction form
    9,729.68/13,428.72 = 5,537.84/x
  3. Step 3: Cross multiply
    9,729.68x = 13,428.72 × 5,537.84
  4. Step 4: Simplify right side
    9,729.68x = 74,366,102.76
  5. Step 5: Solve for x
    x = 74,366,102.76/9,729.68
  6. Step 6: Final answer
    x = 7,643.22

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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.