Home / 21,919.06-30,248.22-12,359.98

Finding the Fourth Proportional to 21,919.06, 30,248.22 and 12,359.98

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Solution

The fourth proportional to 21,919.06, 30,248.22 and 12,359.98 is: 17,056.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,919.06 : 30,248.22 = 12,359.98 : x
  2. Step 2: Convert to fraction form
    21,919.06/30,248.22 = 12,359.98/x
  3. Step 3: Cross multiply
    21,919.06x = 30,248.22 × 12,359.98
  4. Step 4: Simplify right side
    21,919.06x = 373,867,394.24
  5. Step 5: Solve for x
    x = 373,867,394.24/21,919.06
  6. Step 6: Final answer
    x = 17,056.73

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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.