Home / 13,055.99-19,620.14-12,739.49

Finding the Fourth Proportional to 13,055.99, 19,620.14 and 12,739.49

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Solution

The fourth proportional to 13,055.99, 19,620.14 and 12,739.49 is: 19,144.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,055.99 : 19,620.14 = 12,739.49 : x
  2. Step 2: Convert to fraction form
    13,055.99/19,620.14 = 12,739.49/x
  3. Step 3: Cross multiply
    13,055.99x = 19,620.14 × 12,739.49
  4. Step 4: Simplify right side
    13,055.99x = 249,950,415.53
  5. Step 5: Solve for x
    x = 249,950,415.53/13,055.99
  6. Step 6: Final answer
    x = 19,144.50

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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.