Home / 20,583.50-30,916.58-12,279.71

Finding the Fourth Proportional to 20,583.50, 30,916.58 and 12,279.71

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Solution

The fourth proportional to 20,583.50, 30,916.58 and 12,279.71 is: 18,444.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,583.50 : 30,916.58 = 12,279.71 : x
  2. Step 2: Convert to fraction form
    20,583.50/30,916.58 = 12,279.71/x
  3. Step 3: Cross multiply
    20,583.50x = 30,916.58 × 12,279.71
  4. Step 4: Simplify right side
    20,583.50x = 379,646,652.48
  5. Step 5: Solve for x
    x = 379,646,652.48/20,583.50
  6. Step 6: Final answer
    x = 18,444.23

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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.