Home / 13,523.31-18,635.80-9,739.34

Finding the Fourth Proportional to 13,523.31, 18,635.80 and 9,739.34

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Solution

The fourth proportional to 13,523.31, 18,635.80 and 9,739.34 is: 13,421.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,523.31 : 18,635.80 = 9,739.34 : x
  2. Step 2: Convert to fraction form
    13,523.31/18,635.80 = 9,739.34/x
  3. Step 3: Cross multiply
    13,523.31x = 18,635.80 × 9,739.34
  4. Step 4: Simplify right side
    13,523.31x = 181,500,250.50
  5. Step 5: Solve for x
    x = 181,500,250.50/13,523.31
  6. Step 6: Final answer
    x = 13,421.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.