Home / 11,518.02-15,878.88-7,734.60

Finding the Fourth Proportional to 11,518.02, 15,878.88 and 7,734.60

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Solution

The fourth proportional to 11,518.02, 15,878.88 and 7,734.60 is: 10,663.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,518.02 : 15,878.88 = 7,734.60 : x
  2. Step 2: Convert to fraction form
    11,518.02/15,878.88 = 7,734.60/x
  3. Step 3: Cross multiply
    11,518.02x = 15,878.88 × 7,734.60
  4. Step 4: Simplify right side
    11,518.02x = 122,816,785.25
  5. Step 5: Solve for x
    x = 122,816,785.25/11,518.02
  6. Step 6: Final answer
    x = 10,663.01

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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.