Home / 13,141.75-18,130.86-10,117.79

Finding the Fourth Proportional to 13,141.75, 18,130.86 and 10,117.79

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Solution

The fourth proportional to 13,141.75, 18,130.86 and 10,117.79 is: 13,958.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,141.75 : 18,130.86 = 10,117.79 : x
  2. Step 2: Convert to fraction form
    13,141.75/18,130.86 = 10,117.79/x
  3. Step 3: Cross multiply
    13,141.75x = 18,130.86 × 10,117.79
  4. Step 4: Simplify right side
    13,141.75x = 183,444,234.00
  5. Step 5: Solve for x
    x = 183,444,234.00/13,141.75
  6. Step 6: Final answer
    x = 13,958.89

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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.