Home / 11,172.24-15,420.48-6,459.24

Finding the Fourth Proportional to 11,172.24, 15,420.48 and 6,459.24

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Solution

The fourth proportional to 11,172.24, 15,420.48 and 6,459.24 is: 8,915.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.24 : 15,420.48 = 6,459.24 : x
  2. Step 2: Convert to fraction form
    11,172.24/15,420.48 = 6,459.24/x
  3. Step 3: Cross multiply
    11,172.24x = 15,420.48 × 6,459.24
  4. Step 4: Simplify right side
    11,172.24x = 99,604,581.24
  5. Step 5: Solve for x
    x = 99,604,581.24/11,172.24
  6. Step 6: Final answer
    x = 8,915.36

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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.