Home / 18,735.48-28,113.72-11,714.40

Finding the Fourth Proportional to 18,735.48, 28,113.72 and 11,714.40

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Solution

The fourth proportional to 18,735.48, 28,113.72 and 11,714.40 is: 17,578.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.48 : 28,113.72 = 11,714.40 : x
  2. Step 2: Convert to fraction form
    18,735.48/28,113.72 = 11,714.40/x
  3. Step 3: Cross multiply
    18,735.48x = 28,113.72 × 11,714.40
  4. Step 4: Simplify right side
    18,735.48x = 329,335,361.57
  5. Step 5: Solve for x
    x = 329,335,361.57/18,735.48
  6. Step 6: Final answer
    x = 17,578.17

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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.