Home / 11,135.54-15,359.73-7,150.34

Finding the Fourth Proportional to 11,135.54, 15,359.73 and 7,150.34

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Solution

The fourth proportional to 11,135.54, 15,359.73 and 7,150.34 is: 9,862.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,135.54 : 15,359.73 = 7,150.34 : x
  2. Step 2: Convert to fraction form
    11,135.54/15,359.73 = 7,150.34/x
  3. Step 3: Cross multiply
    11,135.54x = 15,359.73 × 7,150.34
  4. Step 4: Simplify right side
    11,135.54x = 109,827,291.81
  5. Step 5: Solve for x
    x = 109,827,291.81/11,135.54
  6. Step 6: Final answer
    x = 9,862.77

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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.