Home / 21,271.22-31,904.09-7,230.68

Finding the Fourth Proportional to 21,271.22, 31,904.09 and 7,230.68

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Solution

The fourth proportional to 21,271.22, 31,904.09 and 7,230.68 is: 10,845.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.22 : 31,904.09 = 7,230.68 : x
  2. Step 2: Convert to fraction form
    21,271.22/31,904.09 = 7,230.68/x
  3. Step 3: Cross multiply
    21,271.22x = 31,904.09 × 7,230.68
  4. Step 4: Simplify right side
    21,271.22x = 230,688,265.48
  5. Step 5: Solve for x
    x = 230,688,265.48/21,271.22
  6. Step 6: Final answer
    x = 10,845.09

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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.