Home / 13,178.94-18,186.26-7,513.86

Finding the Fourth Proportional to 13,178.94, 18,186.26 and 7,513.86

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Solution

The fourth proportional to 13,178.94, 18,186.26 and 7,513.86 is: 10,368.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.94 : 18,186.26 = 7,513.86 : x
  2. Step 2: Convert to fraction form
    13,178.94/18,186.26 = 7,513.86/x
  3. Step 3: Cross multiply
    13,178.94x = 18,186.26 × 7,513.86
  4. Step 4: Simplify right side
    13,178.94x = 136,649,011.56
  5. Step 5: Solve for x
    x = 136,649,011.56/13,178.94
  6. Step 6: Final answer
    x = 10,368.74

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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.