Home / 21,749.30-30,014.03-12,317.86

Finding the Fourth Proportional to 21,749.30, 30,014.03 and 12,317.86

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Solution

The fourth proportional to 21,749.30, 30,014.03 and 12,317.86 is: 16,998.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,749.30 : 30,014.03 = 12,317.86 : x
  2. Step 2: Convert to fraction form
    21,749.30/30,014.03 = 12,317.86/x
  3. Step 3: Cross multiply
    21,749.30x = 30,014.03 × 12,317.86
  4. Step 4: Simplify right side
    21,749.30x = 369,708,619.58
  5. Step 5: Solve for x
    x = 369,708,619.58/21,749.30
  6. Step 6: Final answer
    x = 16,998.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.