Home / 19,685.53-27,175.73-13,640.35

Finding the Fourth Proportional to 19,685.53, 27,175.73 and 13,640.35

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Solution

The fourth proportional to 19,685.53, 27,175.73 and 13,640.35 is: 18,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,685.53 : 27,175.73 = 13,640.35 : x
  2. Step 2: Convert to fraction form
    19,685.53/27,175.73 = 13,640.35/x
  3. Step 3: Cross multiply
    19,685.53x = 27,175.73 × 13,640.35
  4. Step 4: Simplify right side
    19,685.53x = 370,686,421.88
  5. Step 5: Solve for x
    x = 370,686,421.88/19,685.53
  6. Step 6: Final answer
    x = 18,830.40

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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.