Home / 11,429.20-17,172.60-7,271.20

Finding the Fourth Proportional to 11,429.20, 17,172.60 and 7,271.20

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Solution

The fourth proportional to 11,429.20, 17,172.60 and 7,271.20 is: 10,925.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,429.20 : 17,172.60 = 7,271.20 : x
  2. Step 2: Convert to fraction form
    11,429.20/17,172.60 = 7,271.20/x
  3. Step 3: Cross multiply
    11,429.20x = 17,172.60 × 7,271.20
  4. Step 4: Simplify right side
    11,429.20x = 124,865,409.12
  5. Step 5: Solve for x
    x = 124,865,409.12/11,429.20
  6. Step 6: Final answer
    x = 10,925.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.