Home / 11,172.02-15,416.48-6,456.60

Finding the Fourth Proportional to 11,172.02, 15,416.48 and 6,456.60

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Solution

The fourth proportional to 11,172.02, 15,416.48 and 6,456.60 is: 8,909.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.02 : 15,416.48 = 6,456.60 : x
  2. Step 2: Convert to fraction form
    11,172.02/15,416.48 = 6,456.60/x
  3. Step 3: Cross multiply
    11,172.02x = 15,416.48 × 6,456.60
  4. Step 4: Simplify right side
    11,172.02x = 99,538,012.49
  5. Step 5: Solve for x
    x = 99,538,012.49/11,172.02
  6. Step 6: Final answer
    x = 8,909.58

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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.