Home / 11,505.02-15,873.18-6,788.40

Finding the Fourth Proportional to 11,505.02, 15,873.18 and 6,788.40

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Solution

The fourth proportional to 11,505.02, 15,873.18 and 6,788.40 is: 9,365.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,505.02 : 15,873.18 = 6,788.40 : x
  2. Step 2: Convert to fraction form
    11,505.02/15,873.18 = 6,788.40/x
  3. Step 3: Cross multiply
    11,505.02x = 15,873.18 × 6,788.40
  4. Step 4: Simplify right side
    11,505.02x = 107,753,495.11
  5. Step 5: Solve for x
    x = 107,753,495.11/11,505.02
  6. Step 6: Final answer
    x = 9,365.78

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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.