Home / 15,777.45-21,772.71-8,607.48

Finding the Fourth Proportional to 15,777.45, 21,772.71 and 8,607.48

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Solution

The fourth proportional to 15,777.45, 21,772.71 and 8,607.48 is: 11,878.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,777.45 : 21,772.71 = 8,607.48 : x
  2. Step 2: Convert to fraction form
    15,777.45/21,772.71 = 8,607.48/x
  3. Step 3: Cross multiply
    15,777.45x = 21,772.71 × 8,607.48
  4. Step 4: Simplify right side
    15,777.45x = 187,408,165.87
  5. Step 5: Solve for x
    x = 187,408,165.87/15,777.45
  6. Step 6: Final answer
    x = 11,878.23

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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.