Home / 20,440.91-30,618.27-9,356.91

Finding the Fourth Proportional to 20,440.91, 30,618.27 and 9,356.91

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Solution

The fourth proportional to 20,440.91, 30,618.27 and 9,356.91 is: 14,015.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.91 : 30,618.27 = 9,356.91 : x
  2. Step 2: Convert to fraction form
    20,440.91/30,618.27 = 9,356.91/x
  3. Step 3: Cross multiply
    20,440.91x = 30,618.27 × 9,356.91
  4. Step 4: Simplify right side
    20,440.91x = 286,492,396.75
  5. Step 5: Solve for x
    x = 286,492,396.75/20,440.91
  6. Step 6: Final answer
    x = 14,015.64

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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.