Home / 18,615.34-25,688.91-12,339.46

Finding the Fourth Proportional to 18,615.34, 25,688.91 and 12,339.46

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Solution

The fourth proportional to 18,615.34, 25,688.91 and 12,339.46 is: 17,028.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,615.34 : 25,688.91 = 12,339.46 : x
  2. Step 2: Convert to fraction form
    18,615.34/25,688.91 = 12,339.46/x
  3. Step 3: Cross multiply
    18,615.34x = 25,688.91 × 12,339.46
  4. Step 4: Simplify right side
    18,615.34x = 316,987,277.39
  5. Step 5: Solve for x
    x = 316,987,277.39/18,615.34
  6. Step 6: Final answer
    x = 17,028.28

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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.