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Finding the Fourth Proportional to 17,430.60, 26,129.70 and 12,165.60

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Solution

The fourth proportional to 17,430.60, 26,129.70 and 12,165.60 is: 18,237.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,430.60 : 26,129.70 = 12,165.60 : x
  2. Step 2: Convert to fraction form
    17,430.60/26,129.70 = 12,165.60/x
  3. Step 3: Cross multiply
    17,430.60x = 26,129.70 × 12,165.60
  4. Step 4: Simplify right side
    17,430.60x = 317,883,478.32
  5. Step 5: Solve for x
    x = 317,883,478.32/17,430.60
  6. Step 6: Final answer
    x = 18,237.09

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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.