Home / 20,987.56-31,512.36-14,011.04

Finding the Fourth Proportional to 20,987.56, 31,512.36 and 14,011.04

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Solution

The fourth proportional to 20,987.56, 31,512.36 and 14,011.04 is: 21,037.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,987.56 : 31,512.36 = 14,011.04 : x
  2. Step 2: Convert to fraction form
    20,987.56/31,512.36 = 14,011.04/x
  3. Step 3: Cross multiply
    20,987.56x = 31,512.36 × 14,011.04
  4. Step 4: Simplify right side
    20,987.56x = 441,520,936.45
  5. Step 5: Solve for x
    x = 441,520,936.45/20,987.56
  6. Step 6: Final answer
    x = 21,037.27

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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.