Home / 38,421.40-57,632.10-18,738.40

Finding the Fourth Proportional to 38,421.40, 57,632.10 and 18,738.40

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Solution

The fourth proportional to 38,421.40, 57,632.10 and 18,738.40 is: 28,107.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,421.40 : 57,632.10 = 18,738.40 : x
  2. Step 2: Convert to fraction form
    38,421.40/57,632.10 = 18,738.40/x
  3. Step 3: Cross multiply
    38,421.40x = 57,632.10 × 18,738.40
  4. Step 4: Simplify right side
    38,421.40x = 1,079,933,342.64
  5. Step 5: Solve for x
    x = 1,079,933,342.64/38,421.40
  6. Step 6: Final answer
    x = 28,107.60

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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.