Home / 20,276.24-27,981.80-11,323.60

Finding the Fourth Proportional to 20,276.24, 27,981.80 and 11,323.60

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Solution

The fourth proportional to 20,276.24, 27,981.80 and 11,323.60 is: 15,626.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.24 : 27,981.80 = 11,323.60 : x
  2. Step 2: Convert to fraction form
    20,276.24/27,981.80 = 11,323.60/x
  3. Step 3: Cross multiply
    20,276.24x = 27,981.80 × 11,323.60
  4. Step 4: Simplify right side
    20,276.24x = 316,854,710.48
  5. Step 5: Solve for x
    x = 316,854,710.48/20,276.24
  6. Step 6: Final answer
    x = 15,626.90

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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.