Home / 11,180.76-15,421.64-9,490.51

Finding the Fourth Proportional to 11,180.76, 15,421.64 and 9,490.51

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Solution

The fourth proportional to 11,180.76, 15,421.64 and 9,490.51 is: 13,090.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,180.76 : 15,421.64 = 9,490.51 : x
  2. Step 2: Convert to fraction form
    11,180.76/15,421.64 = 9,490.51/x
  3. Step 3: Cross multiply
    11,180.76x = 15,421.64 × 9,490.51
  4. Step 4: Simplify right side
    11,180.76x = 146,359,228.64
  5. Step 5: Solve for x
    x = 146,359,228.64/11,180.76
  6. Step 6: Final answer
    x = 13,090.28

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Half scale
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Double scale
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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.