Home / 13,693.40-20,548.20-9,986.30

Finding the Fourth Proportional to 13,693.40, 20,548.20 and 9,986.30

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Solution

The fourth proportional to 13,693.40, 20,548.20 and 9,986.30 is: 14,985.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,693.40 : 20,548.20 = 9,986.30 : x
  2. Step 2: Convert to fraction form
    13,693.40/20,548.20 = 9,986.30/x
  3. Step 3: Cross multiply
    13,693.40x = 20,548.20 × 9,986.30
  4. Step 4: Simplify right side
    13,693.40x = 205,200,489.66
  5. Step 5: Solve for x
    x = 205,200,489.66/13,693.40
  6. Step 6: Final answer
    x = 14,985.36

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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.