Home / 28,318.64-42,480.84-11,685.68

Finding the Fourth Proportional to 28,318.64, 42,480.84 and 11,685.68

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Solution

The fourth proportional to 28,318.64, 42,480.84 and 11,685.68 is: 17,529.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,318.64 : 42,480.84 = 11,685.68 : x
  2. Step 2: Convert to fraction form
    28,318.64/42,480.84 = 11,685.68/x
  3. Step 3: Cross multiply
    28,318.64x = 42,480.84 × 11,685.68
  4. Step 4: Simplify right side
    28,318.64x = 496,417,502.37
  5. Step 5: Solve for x
    x = 496,417,502.37/28,318.64
  6. Step 6: Final answer
    x = 17,529.71

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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.