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Finding the Fourth Proportional to 20,352.87, 28,088.00 and 12,393.81

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Solution

The fourth proportional to 20,352.87, 28,088.00 and 12,393.81 is: 17,104.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,352.87 : 28,088.00 = 12,393.81 : x
  2. Step 2: Convert to fraction form
    20,352.87/28,088.00 = 12,393.81/x
  3. Step 3: Cross multiply
    20,352.87x = 28,088.00 × 12,393.81
  4. Step 4: Simplify right side
    20,352.87x = 348,117,273.31
  5. Step 5: Solve for x
    x = 348,117,273.31/20,352.87
  6. Step 6: Final answer
    x = 17,104.09

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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.