Home / 10,124.72-15,187.06-5,438.28

Finding the Fourth Proportional to 10,124.72, 15,187.06 and 5,438.28

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Solution

The fourth proportional to 10,124.72, 15,187.06 and 5,438.28 is: 8,157.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,124.72 : 15,187.06 = 5,438.28 : x
  2. Step 2: Convert to fraction form
    10,124.72/15,187.06 = 5,438.28/x
  3. Step 3: Cross multiply
    10,124.72x = 15,187.06 × 5,438.28
  4. Step 4: Simplify right side
    10,124.72x = 82,591,484.66
  5. Step 5: Solve for x
    x = 82,591,484.66/10,124.72
  6. Step 6: Final answer
    x = 8,157.41

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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.