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Finding the Fourth Proportional to 16,999.40, 25,499.10 and 12,852.20

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Solution

The fourth proportional to 16,999.40, 25,499.10 and 12,852.20 is: 19,278.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,999.40 : 25,499.10 = 12,852.20 : x
  2. Step 2: Convert to fraction form
    16,999.40/25,499.10 = 12,852.20/x
  3. Step 3: Cross multiply
    16,999.40x = 25,499.10 × 12,852.20
  4. Step 4: Simplify right side
    16,999.40x = 327,719,533.02
  5. Step 5: Solve for x
    x = 327,719,533.02/16,999.40
  6. Step 6: Final answer
    x = 19,278.30

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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.