Home / 13,920.18-20,881.64-4,559.82

Finding the Fourth Proportional to 13,920.18, 20,881.64 and 4,559.82

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Solution

The fourth proportional to 13,920.18, 20,881.64 and 4,559.82 is: 6,840.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.18 : 20,881.64 = 4,559.82 : x
  2. Step 2: Convert to fraction form
    13,920.18/20,881.64 = 4,559.82/x
  3. Step 3: Cross multiply
    13,920.18x = 20,881.64 × 4,559.82
  4. Step 4: Simplify right side
    13,920.18x = 95,216,519.70
  5. Step 5: Solve for x
    x = 95,216,519.70/13,920.18
  6. Step 6: Final answer
    x = 6,840.18

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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.