Home / 13,749.69-18,964.77-12,619.01

Finding the Fourth Proportional to 13,749.69, 18,964.77 and 12,619.01

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Solution

The fourth proportional to 13,749.69, 18,964.77 and 12,619.01 is: 17,405.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.69 : 18,964.77 = 12,619.01 : x
  2. Step 2: Convert to fraction form
    13,749.69/18,964.77 = 12,619.01/x
  3. Step 3: Cross multiply
    13,749.69x = 18,964.77 × 12,619.01
  4. Step 4: Simplify right side
    13,749.69x = 239,316,527.45
  5. Step 5: Solve for x
    x = 239,316,527.45/13,749.69
  6. Step 6: Final answer
    x = 17,405.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.