Home / 21,045.80-31,605.15-11,204.30

Finding the Fourth Proportional to 21,045.80, 31,605.15 and 11,204.30

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Solution

The fourth proportional to 21,045.80, 31,605.15 and 11,204.30 is: 16,825.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.80 : 31,605.15 = 11,204.30 : x
  2. Step 2: Convert to fraction form
    21,045.80/31,605.15 = 11,204.30/x
  3. Step 3: Cross multiply
    21,045.80x = 31,605.15 × 11,204.30
  4. Step 4: Simplify right side
    21,045.80x = 354,113,582.15
  5. Step 5: Solve for x
    x = 354,113,582.15/21,045.80
  6. Step 6: Final answer
    x = 16,825.86

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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.