Home / 20,259.90-27,971.70-12,716.58

Finding the Fourth Proportional to 20,259.90, 27,971.70 and 12,716.58

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Solution

The fourth proportional to 20,259.90, 27,971.70 and 12,716.58 is: 17,557.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.90 : 27,971.70 = 12,716.58 : x
  2. Step 2: Convert to fraction form
    20,259.90/27,971.70 = 12,716.58/x
  3. Step 3: Cross multiply
    20,259.90x = 27,971.70 × 12,716.58
  4. Step 4: Simplify right side
    20,259.90x = 355,704,360.79
  5. Step 5: Solve for x
    x = 355,704,360.79/20,259.90
  6. Step 6: Final answer
    x = 17,557.06

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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.