Home / 20,423.21-28,183.16-11,925.81

Finding the Fourth Proportional to 20,423.21, 28,183.16 and 11,925.81

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Solution

The fourth proportional to 20,423.21, 28,183.16 and 11,925.81 is: 16,457.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.21 : 28,183.16 = 11,925.81 : x
  2. Step 2: Convert to fraction form
    20,423.21/28,183.16 = 11,925.81/x
  3. Step 3: Cross multiply
    20,423.21x = 28,183.16 × 11,925.81
  4. Step 4: Simplify right side
    20,423.21x = 336,107,041.17
  5. Step 5: Solve for x
    x = 336,107,041.17/20,423.21
  6. Step 6: Final answer
    x = 16,457.11

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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.