Home / 12,685.44-19,030.86-4,787.80

Finding the Fourth Proportional to 12,685.44, 19,030.86 and 4,787.80

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Solution

The fourth proportional to 12,685.44, 19,030.86 and 4,787.80 is: 7,182.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,685.44 : 19,030.86 = 4,787.80 : x
  2. Step 2: Convert to fraction form
    12,685.44/19,030.86 = 4,787.80/x
  3. Step 3: Cross multiply
    12,685.44x = 19,030.86 × 4,787.80
  4. Step 4: Simplify right side
    12,685.44x = 91,115,951.51
  5. Step 5: Solve for x
    x = 91,115,951.51/12,685.44
  6. Step 6: Final answer
    x = 7,182.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.