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Finding the Fourth Proportional to 11,707.28, 17,530.20 and 8,973.20

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Solution

The fourth proportional to 11,707.28, 17,530.20 and 8,973.20 is: 13,436.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,707.28 : 17,530.20 = 8,973.20 : x
  2. Step 2: Convert to fraction form
    11,707.28/17,530.20 = 8,973.20/x
  3. Step 3: Cross multiply
    11,707.28x = 17,530.20 × 8,973.20
  4. Step 4: Simplify right side
    11,707.28x = 157,301,990.64
  5. Step 5: Solve for x
    x = 157,301,990.64/11,707.28
  6. Step 6: Final answer
    x = 13,436.25

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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.