Home / 21,277.86-29,362.11-12,774.96

Finding the Fourth Proportional to 21,277.86, 29,362.11 and 12,774.96

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Solution

The fourth proportional to 21,277.86, 29,362.11 and 12,774.96 is: 17,628.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,277.86 : 29,362.11 = 12,774.96 : x
  2. Step 2: Convert to fraction form
    21,277.86/29,362.11 = 12,774.96/x
  3. Step 3: Cross multiply
    21,277.86x = 29,362.11 × 12,774.96
  4. Step 4: Simplify right side
    21,277.86x = 375,099,780.77
  5. Step 5: Solve for x
    x = 375,099,780.77/21,277.86
  6. Step 6: Final answer
    x = 17,628.64

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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.