Home / 14,518.76-21,776.48-3,989.56

Finding the Fourth Proportional to 14,518.76, 21,776.48 and 3,989.56

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Solution

The fourth proportional to 14,518.76, 21,776.48 and 3,989.56 is: 5,983.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,518.76 : 21,776.48 = 3,989.56 : x
  2. Step 2: Convert to fraction form
    14,518.76/21,776.48 = 3,989.56/x
  3. Step 3: Cross multiply
    14,518.76x = 21,776.48 × 3,989.56
  4. Step 4: Simplify right side
    14,518.76x = 86,878,573.55
  5. Step 5: Solve for x
    x = 86,878,573.55/14,518.76
  6. Step 6: Final answer
    x = 5,983.88

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1.5x scale

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.