Home / 43,920.88-65,826.14-18,931.68

Finding the Fourth Proportional to 43,920.88, 65,826.14 and 18,931.68

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Solution

The fourth proportional to 43,920.88, 65,826.14 and 18,931.68 is: 28,373.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,920.88 : 65,826.14 = 18,931.68 : x
  2. Step 2: Convert to fraction form
    43,920.88/65,826.14 = 18,931.68/x
  3. Step 3: Cross multiply
    43,920.88x = 65,826.14 × 18,931.68
  4. Step 4: Simplify right side
    43,920.88x = 1,246,199,418.12
  5. Step 5: Solve for x
    x = 1,246,199,418.12/43,920.88
  6. Step 6: Final answer
    x = 28,373.74

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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.