Home / 12,905.86-19,366.08-5,509.63

Finding the Fourth Proportional to 12,905.86, 19,366.08 and 5,509.63

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Solution

The fourth proportional to 12,905.86, 19,366.08 and 5,509.63 is: 8,267.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.86 : 19,366.08 = 5,509.63 : x
  2. Step 2: Convert to fraction form
    12,905.86/19,366.08 = 5,509.63/x
  3. Step 3: Cross multiply
    12,905.86x = 19,366.08 × 5,509.63
  4. Step 4: Simplify right side
    12,905.86x = 106,699,935.35
  5. Step 5: Solve for x
    x = 106,699,935.35/12,905.86
  6. Step 6: Final answer
    x = 8,267.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.