Home / 12,780.84-17,635.26-7,329.48

Finding the Fourth Proportional to 12,780.84, 17,635.26 and 7,329.48

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Solution

The fourth proportional to 12,780.84, 17,635.26 and 7,329.48 is: 10,113.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.84 : 17,635.26 = 7,329.48 : x
  2. Step 2: Convert to fraction form
    12,780.84/17,635.26 = 7,329.48/x
  3. Step 3: Cross multiply
    12,780.84x = 17,635.26 × 7,329.48
  4. Step 4: Simplify right side
    12,780.84x = 129,257,285.46
  5. Step 5: Solve for x
    x = 129,257,285.46/12,780.84
  6. Step 6: Final answer
    x = 10,113.36

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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.