Home / 20,070.60-27,697.20-11,118.06

Finding the Fourth Proportional to 20,070.60, 27,697.20 and 11,118.06

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Solution

The fourth proportional to 20,070.60, 27,697.20 and 11,118.06 is: 15,342.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.60 : 27,697.20 = 11,118.06 : x
  2. Step 2: Convert to fraction form
    20,070.60/27,697.20 = 11,118.06/x
  3. Step 3: Cross multiply
    20,070.60x = 27,697.20 × 11,118.06
  4. Step 4: Simplify right side
    20,070.60x = 307,939,131.43
  5. Step 5: Solve for x
    x = 307,939,131.43/20,070.60
  6. Step 6: Final answer
    x = 15,342.80

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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.