Home / 9,938.12-13,709.88-7,145.24

Finding the Fourth Proportional to 9,938.12, 13,709.88 and 7,145.24

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Solution

The fourth proportional to 9,938.12, 13,709.88 and 7,145.24 is: 9,857.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,938.12 : 13,709.88 = 7,145.24 : x
  2. Step 2: Convert to fraction form
    9,938.12/13,709.88 = 7,145.24/x
  3. Step 3: Cross multiply
    9,938.12x = 13,709.88 × 7,145.24
  4. Step 4: Simplify right side
    9,938.12x = 97,960,382.97
  5. Step 5: Solve for x
    x = 97,960,382.97/9,938.12
  6. Step 6: Final answer
    x = 9,857.03

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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.