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Finding the Fourth Proportional to 21,886.10, 30,199.48 and 12,325.48

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Solution

The fourth proportional to 21,886.10, 30,199.48 and 12,325.48 is: 17,007.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,886.10 : 30,199.48 = 12,325.48 : x
  2. Step 2: Convert to fraction form
    21,886.10/30,199.48 = 12,325.48/x
  3. Step 3: Cross multiply
    21,886.10x = 30,199.48 × 12,325.48
  4. Step 4: Simplify right side
    21,886.10x = 372,223,219.64
  5. Step 5: Solve for x
    x = 372,223,219.64/21,886.10
  6. Step 6: Final answer
    x = 17,007.29

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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.