Home / 15,241.33-21,031.11-8,869.99

Finding the Fourth Proportional to 15,241.33, 21,031.11 and 8,869.99

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Solution

The fourth proportional to 15,241.33, 21,031.11 and 8,869.99 is: 12,239.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,241.33 : 21,031.11 = 8,869.99 : x
  2. Step 2: Convert to fraction form
    15,241.33/21,031.11 = 8,869.99/x
  3. Step 3: Cross multiply
    15,241.33x = 21,031.11 × 8,869.99
  4. Step 4: Simplify right side
    15,241.33x = 186,545,735.39
  5. Step 5: Solve for x
    x = 186,545,735.39/15,241.33
  6. Step 6: Final answer
    x = 12,239.47

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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.