Home / 13,918.14-20,878.16-5,598.15

Finding the Fourth Proportional to 13,918.14, 20,878.16 and 5,598.15

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Solution

The fourth proportional to 13,918.14, 20,878.16 and 5,598.15 is: 8,397.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,918.14 : 20,878.16 = 5,598.15 : x
  2. Step 2: Convert to fraction form
    13,918.14/20,878.16 = 5,598.15/x
  3. Step 3: Cross multiply
    13,918.14x = 20,878.16 × 5,598.15
  4. Step 4: Simplify right side
    13,918.14x = 116,879,043.41
  5. Step 5: Solve for x
    x = 116,879,043.41/13,918.14
  6. Step 6: Final answer
    x = 8,397.61

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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.