Home / 12,760.48-19,140.72-3,875.88

Finding the Fourth Proportional to 12,760.48, 19,140.72 and 3,875.88

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Solution

The fourth proportional to 12,760.48, 19,140.72 and 3,875.88 is: 5,813.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,760.48 : 19,140.72 = 3,875.88 : x
  2. Step 2: Convert to fraction form
    12,760.48/19,140.72 = 3,875.88/x
  3. Step 3: Cross multiply
    12,760.48x = 19,140.72 × 3,875.88
  4. Step 4: Simplify right side
    12,760.48x = 74,187,133.83
  5. Step 5: Solve for x
    x = 74,187,133.83/12,760.48
  6. Step 6: Final answer
    x = 5,813.82

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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.