Home / 12,402.07-17,119.34-8,211.67

Finding the Fourth Proportional to 12,402.07, 17,119.34 and 8,211.67

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Solution

The fourth proportional to 12,402.07, 17,119.34 and 8,211.67 is: 11,335.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,402.07 : 17,119.34 = 8,211.67 : x
  2. Step 2: Convert to fraction form
    12,402.07/17,119.34 = 8,211.67/x
  3. Step 3: Cross multiply
    12,402.07x = 17,119.34 × 8,211.67
  4. Step 4: Simplify right side
    12,402.07x = 140,578,305.63
  5. Step 5: Solve for x
    x = 140,578,305.63/12,402.07
  6. Step 6: Final answer
    x = 11,335.07

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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.