Home / 12,013.05-16,575.30-8,620.77

Finding the Fourth Proportional to 12,013.05, 16,575.30 and 8,620.77

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Solution

The fourth proportional to 12,013.05, 16,575.30 and 8,620.77 is: 11,894.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,013.05 : 16,575.30 = 8,620.77 : x
  2. Step 2: Convert to fraction form
    12,013.05/16,575.30 = 8,620.77/x
  3. Step 3: Cross multiply
    12,013.05x = 16,575.30 × 8,620.77
  4. Step 4: Simplify right side
    12,013.05x = 142,891,848.98
  5. Step 5: Solve for x
    x = 142,891,848.98/12,013.05
  6. Step 6: Final answer
    x = 11,894.72

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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.