Home / 15,723.77-21,698.62-11,708.55

Finding the Fourth Proportional to 15,723.77, 21,698.62 and 11,708.55

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Solution

The fourth proportional to 15,723.77, 21,698.62 and 11,708.55 is: 16,157.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,723.77 : 21,698.62 = 11,708.55 : x
  2. Step 2: Convert to fraction form
    15,723.77/21,698.62 = 11,708.55/x
  3. Step 3: Cross multiply
    15,723.77x = 21,698.62 × 11,708.55
  4. Step 4: Simplify right side
    15,723.77x = 254,059,402.18
  5. Step 5: Solve for x
    x = 254,059,402.18/15,723.77
  6. Step 6: Final answer
    x = 16,157.67

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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.