Home / 15,031.88-20,743.80-8,317

Finding the Fourth Proportional to 15,031.88, 20,743.80 and 8,317

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Solution

The fourth proportional to 15,031.88, 20,743.80 and 8,317 is: 11,477.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,031.88 : 20,743.80 = 8,317 : x
  2. Step 2: Convert to fraction form
    15,031.88/20,743.80 = 8,317/x
  3. Step 3: Cross multiply
    15,031.88x = 20,743.80 × 8,317
  4. Step 4: Simplify right side
    15,031.88x = 172,526,184.60
  5. Step 5: Solve for x
    x = 172,526,184.60/15,031.88
  6. Step 6: Final answer
    x = 11,477.35

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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.