Home / 10,889.48-15,029.16-6,172.76

Finding the Fourth Proportional to 10,889.48, 15,029.16 and 6,172.76

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Solution

The fourth proportional to 10,889.48, 15,029.16 and 6,172.76 is: 8,519.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,889.48 : 15,029.16 = 6,172.76 : x
  2. Step 2: Convert to fraction form
    10,889.48/15,029.16 = 6,172.76/x
  3. Step 3: Cross multiply
    10,889.48x = 15,029.16 × 6,172.76
  4. Step 4: Simplify right side
    10,889.48x = 92,771,397.68
  5. Step 5: Solve for x
    x = 92,771,397.68/10,889.48
  6. Step 6: Final answer
    x = 8,519.36

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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.