Home / 12,901.80-19,356.30-6,328.20

Finding the Fourth Proportional to 12,901.80, 19,356.30 and 6,328.20

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Solution

The fourth proportional to 12,901.80, 19,356.30 and 6,328.20 is: 9,494.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,901.80 : 19,356.30 = 6,328.20 : x
  2. Step 2: Convert to fraction form
    12,901.80/19,356.30 = 6,328.20/x
  3. Step 3: Cross multiply
    12,901.80x = 19,356.30 × 6,328.20
  4. Step 4: Simplify right side
    12,901.80x = 122,490,537.66
  5. Step 5: Solve for x
    x = 122,490,537.66/12,901.80
  6. Step 6: Final answer
    x = 9,494.07

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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.