Home / 13,742.49-18,965.10-8,077.16

Finding the Fourth Proportional to 13,742.49, 18,965.10 and 8,077.16

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Solution

The fourth proportional to 13,742.49, 18,965.10 and 8,077.16 is: 11,146.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.49 : 18,965.10 = 8,077.16 : x
  2. Step 2: Convert to fraction form
    13,742.49/18,965.10 = 8,077.16/x
  3. Step 3: Cross multiply
    13,742.49x = 18,965.10 × 8,077.16
  4. Step 4: Simplify right side
    13,742.49x = 153,184,076.00
  5. Step 5: Solve for x
    x = 153,184,076.00/13,742.49
  6. Step 6: Final answer
    x = 11,146.75

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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.