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Finding the Fourth Proportional to 14,992.32, 20,776.91 and 14,780.91

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Solution

The fourth proportional to 14,992.32, 20,776.91 and 14,780.91 is: 20,483.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,992.32 : 20,776.91 = 14,780.91 : x
  2. Step 2: Convert to fraction form
    14,992.32/20,776.91 = 14,780.91/x
  3. Step 3: Cross multiply
    14,992.32x = 20,776.91 × 14,780.91
  4. Step 4: Simplify right side
    14,992.32x = 307,101,562.88
  5. Step 5: Solve for x
    x = 307,101,562.88/14,992.32
  6. Step 6: Final answer
    x = 20,483.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.