Home / 20,423.75-30,582.16-13,381.61

Finding the Fourth Proportional to 20,423.75, 30,582.16 and 13,381.61

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Solution

The fourth proportional to 20,423.75, 30,582.16 and 13,381.61 is: 20,037.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.75 : 30,582.16 = 13,381.61 : x
  2. Step 2: Convert to fraction form
    20,423.75/30,582.16 = 13,381.61/x
  3. Step 3: Cross multiply
    20,423.75x = 30,582.16 × 13,381.61
  4. Step 4: Simplify right side
    20,423.75x = 409,238,351.71
  5. Step 5: Solve for x
    x = 409,238,351.71/20,423.75
  6. Step 6: Final answer
    x = 20,037.38

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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.