Home / 10,929.78-15,082.32-6,453.30

Finding the Fourth Proportional to 10,929.78, 15,082.32 and 6,453.30

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Solution

The fourth proportional to 10,929.78, 15,082.32 and 6,453.30 is: 8,905.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.78 : 15,082.32 = 6,453.30 : x
  2. Step 2: Convert to fraction form
    10,929.78/15,082.32 = 6,453.30/x
  3. Step 3: Cross multiply
    10,929.78x = 15,082.32 × 6,453.30
  4. Step 4: Simplify right side
    10,929.78x = 97,330,735.66
  5. Step 5: Solve for x
    x = 97,330,735.66/10,929.78
  6. Step 6: Final answer
    x = 8,905.10

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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.