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Finding the Fourth Proportional to 31,260.60, 43,140.60 and 17,114.76

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Solution

The fourth proportional to 31,260.60, 43,140.60 and 17,114.76 is: 23,618.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,260.60 : 43,140.60 = 17,114.76 : x
  2. Step 2: Convert to fraction form
    31,260.60/43,140.60 = 17,114.76/x
  3. Step 3: Cross multiply
    31,260.60x = 43,140.60 × 17,114.76
  4. Step 4: Simplify right side
    31,260.60x = 738,341,015.26
  5. Step 5: Solve for x
    x = 738,341,015.26/31,260.60
  6. Step 6: Final answer
    x = 23,618.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.