Home / 13,888.85-20,808.98-11,563.80

Finding the Fourth Proportional to 13,888.85, 20,808.98 and 11,563.80

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Solution

The fourth proportional to 13,888.85, 20,808.98 and 11,563.80 is: 17,325.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.85 : 20,808.98 = 11,563.80 : x
  2. Step 2: Convert to fraction form
    13,888.85/20,808.98 = 11,563.80/x
  3. Step 3: Cross multiply
    13,888.85x = 20,808.98 × 11,563.80
  4. Step 4: Simplify right side
    13,888.85x = 240,630,825.11
  5. Step 5: Solve for x
    x = 240,630,825.11/13,888.85
  6. Step 6: Final answer
    x = 17,325.47

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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.