Home / 12,505.58-18,760.90-5,110.63

Finding the Fourth Proportional to 12,505.58, 18,760.90 and 5,110.63

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Solution

The fourth proportional to 12,505.58, 18,760.90 and 5,110.63 is: 7,666.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.58 : 18,760.90 = 5,110.63 : x
  2. Step 2: Convert to fraction form
    12,505.58/18,760.90 = 5,110.63/x
  3. Step 3: Cross multiply
    12,505.58x = 18,760.90 × 5,110.63
  4. Step 4: Simplify right side
    12,505.58x = 95,880,018.37
  5. Step 5: Solve for x
    x = 95,880,018.37/12,505.58
  6. Step 6: Final answer
    x = 7,666.98

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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.