Home / 12,780.14-17,635.35-9,424.76

Finding the Fourth Proportional to 12,780.14, 17,635.35 and 9,424.76

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Solution

The fourth proportional to 12,780.14, 17,635.35 and 9,424.76 is: 13,005.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.14 : 17,635.35 = 9,424.76 : x
  2. Step 2: Convert to fraction form
    12,780.14/17,635.35 = 9,424.76/x
  3. Step 3: Cross multiply
    12,780.14x = 17,635.35 × 9,424.76
  4. Step 4: Simplify right side
    12,780.14x = 166,208,805.97
  5. Step 5: Solve for x
    x = 166,208,805.97/12,780.14
  6. Step 6: Final answer
    x = 13,005.25

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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.