Home / 13,011.80-19,517.75-3,151.06

Finding the Fourth Proportional to 13,011.80, 19,517.75 and 3,151.06

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Solution

The fourth proportional to 13,011.80, 19,517.75 and 3,151.06 is: 4,726.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.80 : 19,517.75 = 3,151.06 : x
  2. Step 2: Convert to fraction form
    13,011.80/19,517.75 = 3,151.06/x
  3. Step 3: Cross multiply
    13,011.80x = 19,517.75 × 3,151.06
  4. Step 4: Simplify right side
    13,011.80x = 61,501,601.32
  5. Step 5: Solve for x
    x = 61,501,601.32/13,011.80
  6. Step 6: Final answer
    x = 4,726.60

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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.