Home / 19,760.40-27,281.88-15,276.24

Finding the Fourth Proportional to 19,760.40, 27,281.88 and 15,276.24

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Solution

The fourth proportional to 19,760.40, 27,281.88 and 15,276.24 is: 21,090.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,760.40 : 27,281.88 = 15,276.24 : x
  2. Step 2: Convert to fraction form
    19,760.40/27,281.88 = 15,276.24/x
  3. Step 3: Cross multiply
    19,760.40x = 27,281.88 × 15,276.24
  4. Step 4: Simplify right side
    19,760.40x = 416,764,546.53
  5. Step 5: Solve for x
    x = 416,764,546.53/19,760.40
  6. Step 6: Final answer
    x = 21,090.90

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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.