Home / 13,489.74-18,615.89-7,521.26

Finding the Fourth Proportional to 13,489.74, 18,615.89 and 7,521.26

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Solution

The fourth proportional to 13,489.74, 18,615.89 and 7,521.26 is: 10,379.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.74 : 18,615.89 = 7,521.26 : x
  2. Step 2: Convert to fraction form
    13,489.74/18,615.89 = 7,521.26/x
  3. Step 3: Cross multiply
    13,489.74x = 18,615.89 × 7,521.26
  4. Step 4: Simplify right side
    13,489.74x = 140,014,818.14
  5. Step 5: Solve for x
    x = 140,014,818.14/13,489.74
  6. Step 6: Final answer
    x = 10,379.36

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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.