Home / 12,896.80-19,341.08-4,129.64

Finding the Fourth Proportional to 12,896.80, 19,341.08 and 4,129.64

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Solution

The fourth proportional to 12,896.80, 19,341.08 and 4,129.64 is: 6,193.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,896.80 : 19,341.08 = 4,129.64 : x
  2. Step 2: Convert to fraction form
    12,896.80/19,341.08 = 4,129.64/x
  3. Step 3: Cross multiply
    12,896.80x = 19,341.08 × 4,129.64
  4. Step 4: Simplify right side
    12,896.80x = 79,871,697.61
  5. Step 5: Solve for x
    x = 79,871,697.61/12,896.80
  6. Step 6: Final answer
    x = 6,193.14

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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.