Home / 13,920.89-20,885.21-4,567.48

Finding the Fourth Proportional to 13,920.89, 20,885.21 and 4,567.48

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Solution

The fourth proportional to 13,920.89, 20,885.21 and 4,567.48 is: 6,852.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.89 : 20,885.21 = 4,567.48 : x
  2. Step 2: Convert to fraction form
    13,920.89/20,885.21 = 4,567.48/x
  3. Step 3: Cross multiply
    13,920.89x = 20,885.21 × 4,567.48
  4. Step 4: Simplify right side
    13,920.89x = 95,392,779.79
  5. Step 5: Solve for x
    x = 95,392,779.79/13,920.89
  6. Step 6: Final answer
    x = 6,852.49

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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.