Home / 12,445.77-17,175.06-6,780.45

Finding the Fourth Proportional to 12,445.77, 17,175.06 and 6,780.45

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Solution

The fourth proportional to 12,445.77, 17,175.06 and 6,780.45 is: 9,356.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445.77 : 17,175.06 = 6,780.45 : x
  2. Step 2: Convert to fraction form
    12,445.77/17,175.06 = 6,780.45/x
  3. Step 3: Cross multiply
    12,445.77x = 17,175.06 × 6,780.45
  4. Step 4: Simplify right side
    12,445.77x = 116,454,635.58
  5. Step 5: Solve for x
    x = 116,454,635.58/12,445.77
  6. Step 6: Final answer
    x = 9,356.97

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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.