Home / 21,135.96-31,703.78-6,346.16

Finding the Fourth Proportional to 21,135.96, 31,703.78 and 6,346.16

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Solution

The fourth proportional to 21,135.96, 31,703.78 and 6,346.16 is: 9,519.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.96 : 31,703.78 = 6,346.16 : x
  2. Step 2: Convert to fraction form
    21,135.96/31,703.78 = 6,346.16/x
  3. Step 3: Cross multiply
    21,135.96x = 31,703.78 × 6,346.16
  4. Step 4: Simplify right side
    21,135.96x = 201,197,260.48
  5. Step 5: Solve for x
    x = 201,197,260.48/21,135.96
  6. Step 6: Final answer
    x = 9,519.19

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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.