Home / 18,621.36-25,688.34-11,551.68

Finding the Fourth Proportional to 18,621.36, 25,688.34 and 11,551.68

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Solution

The fourth proportional to 18,621.36, 25,688.34 and 11,551.68 is: 15,935.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.36 : 25,688.34 = 11,551.68 : x
  2. Step 2: Convert to fraction form
    18,621.36/25,688.34 = 11,551.68/x
  3. Step 3: Cross multiply
    18,621.36x = 25,688.34 × 11,551.68
  4. Step 4: Simplify right side
    18,621.36x = 296,743,483.41
  5. Step 5: Solve for x
    x = 296,743,483.41/18,621.36
  6. Step 6: Final answer
    x = 15,935.65

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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.