Home / 13,615.96-18,747-12,370.24

Finding the Fourth Proportional to 13,615.96, 18,747 and 12,370.24

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Solution

The fourth proportional to 13,615.96, 18,747 and 12,370.24 is: 17,031.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.96 : 18,747 = 12,370.24 : x
  2. Step 2: Convert to fraction form
    13,615.96/18,747 = 12,370.24/x
  3. Step 3: Cross multiply
    13,615.96x = 18,747 × 12,370.24
  4. Step 4: Simplify right side
    13,615.96x = 231,904,889.28
  5. Step 5: Solve for x
    x = 231,904,889.28/13,615.96
  6. Step 6: Final answer
    x = 17,031.84

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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.