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Finding the Fourth Proportional to 28,184.70, 38,894.87 and 15,609.44

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Solution

The fourth proportional to 28,184.70, 38,894.87 and 15,609.44 is: 21,541.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,184.70 : 38,894.87 = 15,609.44 : x
  2. Step 2: Convert to fraction form
    28,184.70/38,894.87 = 15,609.44/x
  3. Step 3: Cross multiply
    28,184.70x = 38,894.87 × 15,609.44
  4. Step 4: Simplify right side
    28,184.70x = 607,127,139.57
  5. Step 5: Solve for x
    x = 607,127,139.57/28,184.70
  6. Step 6: Final answer
    x = 21,541.02

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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.