Home / 21,160.36-31,740.60-6,370.84

Finding the Fourth Proportional to 21,160.36, 31,740.60 and 6,370.84

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Solution

The fourth proportional to 21,160.36, 31,740.60 and 6,370.84 is: 9,556.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,160.36 : 31,740.60 = 6,370.84 : x
  2. Step 2: Convert to fraction form
    21,160.36/31,740.60 = 6,370.84/x
  3. Step 3: Cross multiply
    21,160.36x = 31,740.60 × 6,370.84
  4. Step 4: Simplify right side
    21,160.36x = 202,214,284.10
  5. Step 5: Solve for x
    x = 202,214,284.10/21,160.36
  6. Step 6: Final answer
    x = 9,556.28

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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.