Home / 12,895.12-19,345.10-4,127.68

Finding the Fourth Proportional to 12,895.12, 19,345.10 and 4,127.68

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Solution

The fourth proportional to 12,895.12, 19,345.10 and 4,127.68 is: 6,192.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,895.12 : 19,345.10 = 4,127.68 : x
  2. Step 2: Convert to fraction form
    12,895.12/19,345.10 = 4,127.68/x
  3. Step 3: Cross multiply
    12,895.12x = 19,345.10 × 4,127.68
  4. Step 4: Simplify right side
    12,895.12x = 79,850,382.37
  5. Step 5: Solve for x
    x = 79,850,382.37/12,895.12
  6. Step 6: Final answer
    x = 6,192.29

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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.