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Finding the Fourth Proportional to 18,686.25, 25,787.03 and 10,303.29

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Solution

The fourth proportional to 18,686.25, 25,787.03 and 10,303.29 is: 14,218.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.25 : 25,787.03 = 10,303.29 : x
  2. Step 2: Convert to fraction form
    18,686.25/25,787.03 = 10,303.29/x
  3. Step 3: Cross multiply
    18,686.25x = 25,787.03 × 10,303.29
  4. Step 4: Simplify right side
    18,686.25x = 265,691,196.81
  5. Step 5: Solve for x
    x = 265,691,196.81/18,686.25
  6. Step 6: Final answer
    x = 14,218.54

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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.