Home / 10,129.98-15,199.52-6,431.22

Finding the Fourth Proportional to 10,129.98, 15,199.52 and 6,431.22

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Solution

The fourth proportional to 10,129.98, 15,199.52 and 6,431.22 is: 9,649.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,129.98 : 15,199.52 = 6,431.22 : x
  2. Step 2: Convert to fraction form
    10,129.98/15,199.52 = 6,431.22/x
  3. Step 3: Cross multiply
    10,129.98x = 15,199.52 × 6,431.22
  4. Step 4: Simplify right side
    10,129.98x = 97,751,424.86
  5. Step 5: Solve for x
    x = 97,751,424.86/10,129.98
  6. Step 6: Final answer
    x = 9,649.72

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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.