Home / 9,509.70-13,121.28-5,971.62

Finding the Fourth Proportional to 9,509.70, 13,121.28 and 5,971.62

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Solution

The fourth proportional to 9,509.70, 13,121.28 and 5,971.62 is: 8,239.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,509.70 : 13,121.28 = 5,971.62 : x
  2. Step 2: Convert to fraction form
    9,509.70/13,121.28 = 5,971.62/x
  3. Step 3: Cross multiply
    9,509.70x = 13,121.28 × 5,971.62
  4. Step 4: Simplify right side
    9,509.70x = 78,355,298.07
  5. Step 5: Solve for x
    x = 78,355,298.07/9,509.70
  6. Step 6: Final answer
    x = 8,239.51

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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.