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Finding the Fourth Proportional to 28,592.92, 42,889.06 and 11,722.16

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Solution

The fourth proportional to 28,592.92, 42,889.06 and 11,722.16 is: 17,583.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,592.92 : 42,889.06 = 11,722.16 : x
  2. Step 2: Convert to fraction form
    28,592.92/42,889.06 = 11,722.16/x
  3. Step 3: Cross multiply
    28,592.92x = 42,889.06 × 11,722.16
  4. Step 4: Simplify right side
    28,592.92x = 502,752,364.96
  5. Step 5: Solve for x
    x = 502,752,364.96/28,592.92
  6. Step 6: Final answer
    x = 17,583.11

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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.