Home / 19,139.60-28,710.30-5,992.40

Finding the Fourth Proportional to 19,139.60, 28,710.30 and 5,992.40

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Solution

The fourth proportional to 19,139.60, 28,710.30 and 5,992.40 is: 8,988.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,139.60 : 28,710.30 = 5,992.40 : x
  2. Step 2: Convert to fraction form
    19,139.60/28,710.30 = 5,992.40/x
  3. Step 3: Cross multiply
    19,139.60x = 28,710.30 × 5,992.40
  4. Step 4: Simplify right side
    19,139.60x = 172,043,601.72
  5. Step 5: Solve for x
    x = 172,043,601.72/19,139.60
  6. Step 6: Final answer
    x = 8,988.88

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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.