Home / 20,070.64-30,077.28-11,287.12

Finding the Fourth Proportional to 20,070.64, 30,077.28 and 11,287.12

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Solution

The fourth proportional to 20,070.64, 30,077.28 and 11,287.12 is: 16,914.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.64 : 30,077.28 = 11,287.12 : x
  2. Step 2: Convert to fraction form
    20,070.64/30,077.28 = 11,287.12/x
  3. Step 3: Cross multiply
    20,070.64x = 30,077.28 × 11,287.12
  4. Step 4: Simplify right side
    20,070.64x = 339,485,868.63
  5. Step 5: Solve for x
    x = 339,485,868.63/20,070.64
  6. Step 6: Final answer
    x = 16,914.55

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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.