Home / 11,820.79-17,726.46-5,242.51

Finding the Fourth Proportional to 11,820.79, 17,726.46 and 5,242.51

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Solution

The fourth proportional to 11,820.79, 17,726.46 and 5,242.51 is: 7,861.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.79 : 17,726.46 = 5,242.51 : x
  2. Step 2: Convert to fraction form
    11,820.79/17,726.46 = 5,242.51/x
  3. Step 3: Cross multiply
    11,820.79x = 17,726.46 × 5,242.51
  4. Step 4: Simplify right side
    11,820.79x = 92,931,143.81
  5. Step 5: Solve for x
    x = 92,931,143.81/11,820.79
  6. Step 6: Final answer
    x = 7,861.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.