Home / 28,087.04-38,760.72-15,512.64

Finding the Fourth Proportional to 28,087.04, 38,760.72 and 15,512.64

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Solution

The fourth proportional to 28,087.04, 38,760.72 and 15,512.64 is: 21,407.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,087.04 : 38,760.72 = 15,512.64 : x
  2. Step 2: Convert to fraction form
    28,087.04/38,760.72 = 15,512.64/x
  3. Step 3: Cross multiply
    28,087.04x = 38,760.72 × 15,512.64
  4. Step 4: Simplify right side
    28,087.04x = 601,281,095.50
  5. Step 5: Solve for x
    x = 601,281,095.50/28,087.04
  6. Step 6: Final answer
    x = 21,407.78

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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.