Home / 13,717.74-18,929.85-8,615.89

Finding the Fourth Proportional to 13,717.74, 18,929.85 and 8,615.89

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Solution

The fourth proportional to 13,717.74, 18,929.85 and 8,615.89 is: 11,889.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,717.74 : 18,929.85 = 8,615.89 : x
  2. Step 2: Convert to fraction form
    13,717.74/18,929.85 = 8,615.89/x
  3. Step 3: Cross multiply
    13,717.74x = 18,929.85 × 8,615.89
  4. Step 4: Simplify right side
    13,717.74x = 163,097,367.59
  5. Step 5: Solve for x
    x = 163,097,367.59/13,717.74
  6. Step 6: Final answer
    x = 11,889.53

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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.