Home / 21,167.08-31,739.46-11,303.68

Finding the Fourth Proportional to 21,167.08, 31,739.46 and 11,303.68

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Solution

The fourth proportional to 21,167.08, 31,739.46 and 11,303.68 is: 16,949.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.08 : 31,739.46 = 11,303.68 : x
  2. Step 2: Convert to fraction form
    21,167.08/31,739.46 = 11,303.68/x
  3. Step 3: Cross multiply
    21,167.08x = 31,739.46 × 11,303.68
  4. Step 4: Simplify right side
    21,167.08x = 358,772,699.21
  5. Step 5: Solve for x
    x = 358,772,699.21/21,167.08
  6. Step 6: Final answer
    x = 16,949.56

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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.