Home / 21,750.58-30,017.90-12,192.09

Finding the Fourth Proportional to 21,750.58, 30,017.90 and 12,192.09

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Solution

The fourth proportional to 21,750.58, 30,017.90 and 12,192.09 is: 16,826.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,750.58 : 30,017.90 = 12,192.09 : x
  2. Step 2: Convert to fraction form
    21,750.58/30,017.90 = 12,192.09/x
  3. Step 3: Cross multiply
    21,750.58x = 30,017.90 × 12,192.09
  4. Step 4: Simplify right side
    21,750.58x = 365,980,727.36
  5. Step 5: Solve for x
    x = 365,980,727.36/21,750.58
  6. Step 6: Final answer
    x = 16,826.26

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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.