Home / 28,087.43-38,760.95-15,340.98

Finding the Fourth Proportional to 28,087.43, 38,760.95 and 15,340.98

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Solution

The fourth proportional to 28,087.43, 38,760.95 and 15,340.98 is: 21,170.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.43 : 38,760.95 = 15,340.98 : x
  2. Step 2: Convert to fraction form
    28,087.43/38,760.95 = 15,340.98/x
  3. Step 3: Cross multiply
    28,087.43x = 38,760.95 × 15,340.98
  4. Step 4: Simplify right side
    28,087.43x = 594,630,997.08
  5. Step 5: Solve for x
    x = 594,630,997.08/28,087.43
  6. Step 6: Final answer
    x = 21,170.72

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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.