Home / 25,555.92-38,330.64-18,991.68

Finding the Fourth Proportional to 25,555.92, 38,330.64 and 18,991.68

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Solution

The fourth proportional to 25,555.92, 38,330.64 and 18,991.68 is: 28,485.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,555.92 : 38,330.64 = 18,991.68 : x
  2. Step 2: Convert to fraction form
    25,555.92/38,330.64 = 18,991.68/x
  3. Step 3: Cross multiply
    25,555.92x = 38,330.64 × 18,991.68
  4. Step 4: Simplify right side
    25,555.92x = 727,963,249.08
  5. Step 5: Solve for x
    x = 727,963,249.08/25,555.92
  6. Step 6: Final answer
    x = 28,485.11

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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.