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Finding the Fourth Proportional to 11,426.60, 17,128.04 and 7,047.14

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Solution

The fourth proportional to 11,426.60, 17,128.04 and 7,047.14 is: 10,563.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,426.60 : 17,128.04 = 7,047.14 : x
  2. Step 2: Convert to fraction form
    11,426.60/17,128.04 = 7,047.14/x
  3. Step 3: Cross multiply
    11,426.60x = 17,128.04 × 7,047.14
  4. Step 4: Simplify right side
    11,426.60x = 120,703,695.81
  5. Step 5: Solve for x
    x = 120,703,695.81/11,426.60
  6. Step 6: Final answer
    x = 10,563.40

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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.