Home / 13,920.12-20,885.31-6,526.98

Finding the Fourth Proportional to 13,920.12, 20,885.31 and 6,526.98

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Solution

The fourth proportional to 13,920.12, 20,885.31 and 6,526.98 is: 9,792.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,920.12 : 20,885.31 = 6,526.98 : x
  2. Step 2: Convert to fraction form
    13,920.12/20,885.31 = 6,526.98/x
  3. Step 3: Cross multiply
    13,920.12x = 20,885.31 × 6,526.98
  4. Step 4: Simplify right side
    13,920.12x = 136,318,000.66
  5. Step 5: Solve for x
    x = 136,318,000.66/13,920.12
  6. Step 6: Final answer
    x = 9,792.88

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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.