Home / 38,685.12-58,028.64-12,392.64

Finding the Fourth Proportional to 38,685.12, 58,028.64 and 12,392.64

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Solution

The fourth proportional to 38,685.12, 58,028.64 and 12,392.64 is: 18,589.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,685.12 : 58,028.64 = 12,392.64 : x
  2. Step 2: Convert to fraction form
    38,685.12/58,028.64 = 12,392.64/x
  3. Step 3: Cross multiply
    38,685.12x = 58,028.64 × 12,392.64
  4. Step 4: Simplify right side
    38,685.12x = 719,128,045.21
  5. Step 5: Solve for x
    x = 719,128,045.21/38,685.12
  6. Step 6: Final answer
    x = 18,589.27

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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.