Home / 18,688.36-25,786.74-11,133.76

Finding the Fourth Proportional to 18,688.36, 25,786.74 and 11,133.76

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Solution

The fourth proportional to 18,688.36, 25,786.74 and 11,133.76 is: 15,362.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.36 : 25,786.74 = 11,133.76 : x
  2. Step 2: Convert to fraction form
    18,688.36/25,786.74 = 11,133.76/x
  3. Step 3: Cross multiply
    18,688.36x = 25,786.74 × 11,133.76
  4. Step 4: Simplify right side
    18,688.36x = 287,103,374.34
  5. Step 5: Solve for x
    x = 287,103,374.34/18,688.36
  6. Step 6: Final answer
    x = 15,362.68

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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.