Home / 20,655.99-31,096.38-18,818.91

Finding the Fourth Proportional to 20,655.99, 31,096.38 and 18,818.91

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Solution

The fourth proportional to 20,655.99, 31,096.38 and 18,818.91 is: 28,330.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,655.99 : 31,096.38 = 18,818.91 : x
  2. Step 2: Convert to fraction form
    20,655.99/31,096.38 = 18,818.91/x
  3. Step 3: Cross multiply
    20,655.99x = 31,096.38 × 18,818.91
  4. Step 4: Simplify right side
    20,655.99x = 585,199,976.55
  5. Step 5: Solve for x
    x = 585,199,976.55/20,655.99
  6. Step 6: Final answer
    x = 28,330.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.