Home / 21,765.86-30,035.63-12,205.02

Finding the Fourth Proportional to 21,765.86, 30,035.63 and 12,205.02

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Solution

The fourth proportional to 21,765.86, 30,035.63 and 12,205.02 is: 16,842.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.86 : 30,035.63 = 12,205.02 : x
  2. Step 2: Convert to fraction form
    21,765.86/30,035.63 = 12,205.02/x
  3. Step 3: Cross multiply
    21,765.86x = 30,035.63 × 12,205.02
  4. Step 4: Simplify right side
    21,765.86x = 366,585,495.38
  5. Step 5: Solve for x
    x = 366,585,495.38/21,765.86
  6. Step 6: Final answer
    x = 16,842.23

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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.