Home / 20,276.60-27,980.84-11,323.87

Finding the Fourth Proportional to 20,276.60, 27,980.84 and 11,323.87

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Solution

The fourth proportional to 20,276.60, 27,980.84 and 11,323.87 is: 15,626.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.60 : 27,980.84 = 11,323.87 : x
  2. Step 2: Convert to fraction form
    20,276.60/27,980.84 = 11,323.87/x
  3. Step 3: Cross multiply
    20,276.60x = 27,980.84 × 11,323.87
  4. Step 4: Simplify right side
    20,276.60x = 316,851,353.01
  5. Step 5: Solve for x
    x = 316,851,353.01/20,276.60
  6. Step 6: Final answer
    x = 15,626.46

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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.