Home / 12,760.64-19,143.72-3,875.24

Finding the Fourth Proportional to 12,760.64, 19,143.72 and 3,875.24

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Solution

The fourth proportional to 12,760.64, 19,143.72 and 3,875.24 is: 5,813.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,760.64 : 19,143.72 = 3,875.24 : x
  2. Step 2: Convert to fraction form
    12,760.64/19,143.72 = 3,875.24/x
  3. Step 3: Cross multiply
    12,760.64x = 19,143.72 × 3,875.24
  4. Step 4: Simplify right side
    12,760.64x = 74,186,509.49
  5. Step 5: Solve for x
    x = 74,186,509.49/12,760.64
  6. Step 6: Final answer
    x = 5,813.70

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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.