Home / 11,329.20-15,627.96-7,130.16

Finding the Fourth Proportional to 11,329.20, 15,627.96 and 7,130.16

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Solution

The fourth proportional to 11,329.20, 15,627.96 and 7,130.16 is: 9,835.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,329.20 : 15,627.96 = 7,130.16 : x
  2. Step 2: Convert to fraction form
    11,329.20/15,627.96 = 7,130.16/x
  3. Step 3: Cross multiply
    11,329.20x = 15,627.96 × 7,130.16
  4. Step 4: Simplify right side
    11,329.20x = 111,429,855.27
  5. Step 5: Solve for x
    x = 111,429,855.27/11,329.20
  6. Step 6: Final answer
    x = 9,835.63

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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.