Home / 18,718.10-25,830.58-10,220.39

Finding the Fourth Proportional to 18,718.10, 25,830.58 and 10,220.39

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Solution

The fourth proportional to 18,718.10, 25,830.58 and 10,220.39 is: 14,103.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.10 : 25,830.58 = 10,220.39 : x
  2. Step 2: Convert to fraction form
    18,718.10/25,830.58 = 10,220.39/x
  3. Step 3: Cross multiply
    18,718.10x = 25,830.58 × 10,220.39
  4. Step 4: Simplify right side
    18,718.10x = 263,998,601.53
  5. Step 5: Solve for x
    x = 263,998,601.53/18,718.10
  6. Step 6: Final answer
    x = 14,103.92

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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.