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Finding the Fourth Proportional to 18,430.08, 27,629.76 and 8,564.16

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Solution

The fourth proportional to 18,430.08, 27,629.76 and 8,564.16 is: 12,839.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,430.08 : 27,629.76 = 8,564.16 : x
  2. Step 2: Convert to fraction form
    18,430.08/27,629.76 = 8,564.16/x
  3. Step 3: Cross multiply
    18,430.08x = 27,629.76 × 8,564.16
  4. Step 4: Simplify right side
    18,430.08x = 236,625,685.40
  5. Step 5: Solve for x
    x = 236,625,685.40/18,430.08
  6. Step 6: Final answer
    x = 12,839.10

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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.