Home / 15,247.58-21,043.86-8,785.96

Finding the Fourth Proportional to 15,247.58, 21,043.86 and 8,785.96

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Solution

The fourth proportional to 15,247.58, 21,043.86 and 8,785.96 is: 12,125.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,247.58 : 21,043.86 = 8,785.96 : x
  2. Step 2: Convert to fraction form
    15,247.58/21,043.86 = 8,785.96/x
  3. Step 3: Cross multiply
    15,247.58x = 21,043.86 × 8,785.96
  4. Step 4: Simplify right side
    15,247.58x = 184,890,406.99
  5. Step 5: Solve for x
    x = 184,890,406.99/15,247.58
  6. Step 6: Final answer
    x = 12,125.89

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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.