Home / 20,985.48-28,957.50-11,910.24

Finding the Fourth Proportional to 20,985.48, 28,957.50 and 11,910.24

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Solution

The fourth proportional to 20,985.48, 28,957.50 and 11,910.24 is: 16,434.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985.48 : 28,957.50 = 11,910.24 : x
  2. Step 2: Convert to fraction form
    20,985.48/28,957.50 = 11,910.24/x
  3. Step 3: Cross multiply
    20,985.48x = 28,957.50 × 11,910.24
  4. Step 4: Simplify right side
    20,985.48x = 344,890,774.80
  5. Step 5: Solve for x
    x = 344,890,774.80/20,985.48
  6. Step 6: Final answer
    x = 16,434.73

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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.