Home / 20,589.50-30,925.58-12,285.72

Finding the Fourth Proportional to 20,589.50, 30,925.58 and 12,285.72

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Solution

The fourth proportional to 20,589.50, 30,925.58 and 12,285.72 is: 18,453.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589.50 : 30,925.58 = 12,285.72 : x
  2. Step 2: Convert to fraction form
    20,589.50/30,925.58 = 12,285.72/x
  3. Step 3: Cross multiply
    20,589.50x = 30,925.58 × 12,285.72
  4. Step 4: Simplify right side
    20,589.50x = 379,942,955.29
  5. Step 5: Solve for x
    x = 379,942,955.29/20,589.50
  6. Step 6: Final answer
    x = 18,453.24

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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.