Home / 25,505.20-38,182.20-18,960.40

Finding the Fourth Proportional to 25,505.20, 38,182.20 and 18,960.40

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Solution

The fourth proportional to 25,505.20, 38,182.20 and 18,960.40 is: 28,384.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,505.20 : 38,182.20 = 18,960.40 : x
  2. Step 2: Convert to fraction form
    25,505.20/38,182.20 = 18,960.40/x
  3. Step 3: Cross multiply
    25,505.20x = 38,182.20 × 18,960.40
  4. Step 4: Simplify right side
    25,505.20x = 723,949,784.88
  5. Step 5: Solve for x
    x = 723,949,784.88/25,505.20
  6. Step 6: Final answer
    x = 28,384.40

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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.