Home / 15,217.49-21,000.24-8,503.40

Finding the Fourth Proportional to 15,217.49, 21,000.24 and 8,503.40

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Solution

The fourth proportional to 15,217.49, 21,000.24 and 8,503.40 is: 11,734.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,217.49 : 21,000.24 = 8,503.40 : x
  2. Step 2: Convert to fraction form
    15,217.49/21,000.24 = 8,503.40/x
  3. Step 3: Cross multiply
    15,217.49x = 21,000.24 × 8,503.40
  4. Step 4: Simplify right side
    15,217.49x = 178,573,514.58
  5. Step 5: Solve for x
    x = 178,573,514.58/15,217.49
  6. Step 6: Final answer
    x = 11,734.75

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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.