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Finding the Fourth Proportional to 11,970.28, 17,918.44 and 7,801.32

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Solution

The fourth proportional to 11,970.28, 17,918.44 and 7,801.32 is: 11,677.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,970.28 : 17,918.44 = 7,801.32 : x
  2. Step 2: Convert to fraction form
    11,970.28/17,918.44 = 7,801.32/x
  3. Step 3: Cross multiply
    11,970.28x = 17,918.44 × 7,801.32
  4. Step 4: Simplify right side
    11,970.28x = 139,787,484.34
  5. Step 5: Solve for x
    x = 139,787,484.34/11,970.28
  6. Step 6: Final answer
    x = 11,677.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.