Home / 14,840.15-20,479.40-8,125.77

Finding the Fourth Proportional to 14,840.15, 20,479.40 and 8,125.77

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Solution

The fourth proportional to 14,840.15, 20,479.40 and 8,125.77 is: 11,213.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,840.15 : 20,479.40 = 8,125.77 : x
  2. Step 2: Convert to fraction form
    14,840.15/20,479.40 = 8,125.77/x
  3. Step 3: Cross multiply
    14,840.15x = 20,479.40 × 8,125.77
  4. Step 4: Simplify right side
    14,840.15x = 166,410,983.63
  5. Step 5: Solve for x
    x = 166,410,983.63/14,840.15
  6. Step 6: Final answer
    x = 11,213.57

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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.