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Finding the Fourth Proportional to 26,007.60, 38,946.60 and 20,823.60

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Solution

The fourth proportional to 26,007.60, 38,946.60 and 20,823.60 is: 31,183.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,007.60 : 38,946.60 = 20,823.60 : x
  2. Step 2: Convert to fraction form
    26,007.60/38,946.60 = 20,823.60/x
  3. Step 3: Cross multiply
    26,007.60x = 38,946.60 × 20,823.60
  4. Step 4: Simplify right side
    26,007.60x = 811,008,419.76
  5. Step 5: Solve for x
    x = 811,008,419.76/26,007.60
  6. Step 6: Final answer
    x = 31,183.52

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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.