Home / 21,403.22-29,538.66-12,328.89

Finding the Fourth Proportional to 21,403.22, 29,538.66 and 12,328.89

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Solution

The fourth proportional to 21,403.22, 29,538.66 and 12,328.89 is: 17,015.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,403.22 : 29,538.66 = 12,328.89 : x
  2. Step 2: Convert to fraction form
    21,403.22/29,538.66 = 12,328.89/x
  3. Step 3: Cross multiply
    21,403.22x = 29,538.66 × 12,328.89
  4. Step 4: Simplify right side
    21,403.22x = 364,178,889.89
  5. Step 5: Solve for x
    x = 364,178,889.89/21,403.22
  6. Step 6: Final answer
    x = 17,015.15

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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.