Home / 12,976.86-17,913.51-8,787.54

Finding the Fourth Proportional to 12,976.86, 17,913.51 and 8,787.54

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Solution

The fourth proportional to 12,976.86, 17,913.51 and 8,787.54 is: 12,130.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,976.86 : 17,913.51 = 8,787.54 : x
  2. Step 2: Convert to fraction form
    12,976.86/17,913.51 = 8,787.54/x
  3. Step 3: Cross multiply
    12,976.86x = 17,913.51 × 8,787.54
  4. Step 4: Simplify right side
    12,976.86x = 157,415,685.67
  5. Step 5: Solve for x
    x = 157,415,685.67/12,976.86
  6. Step 6: Final answer
    x = 12,130.49

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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.