Home / 14,777.28-20,392.08-8,403.72

Finding the Fourth Proportional to 14,777.28, 20,392.08 and 8,403.72

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Solution

The fourth proportional to 14,777.28, 20,392.08 and 8,403.72 is: 11,596.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,777.28 : 20,392.08 = 8,403.72 : x
  2. Step 2: Convert to fraction form
    14,777.28/20,392.08 = 8,403.72/x
  3. Step 3: Cross multiply
    14,777.28x = 20,392.08 × 8,403.72
  4. Step 4: Simplify right side
    14,777.28x = 171,369,330.54
  5. Step 5: Solve for x
    x = 171,369,330.54/14,777.28
  6. Step 6: Final answer
    x = 11,596.81

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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.