Home / 21,920.54-30,248.51-12,359.88

Finding the Fourth Proportional to 21,920.54, 30,248.51 and 12,359.88

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Solution

The fourth proportional to 21,920.54, 30,248.51 and 12,359.88 is: 17,055.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,920.54 : 30,248.51 = 12,359.88 : x
  2. Step 2: Convert to fraction form
    21,920.54/30,248.51 = 12,359.88/x
  3. Step 3: Cross multiply
    21,920.54x = 30,248.51 × 12,359.88
  4. Step 4: Simplify right side
    21,920.54x = 373,867,891.98
  5. Step 5: Solve for x
    x = 373,867,891.98/21,920.54
  6. Step 6: Final answer
    x = 17,055.60

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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.