Home / 28,985.80-43,493.10-11,456.20

Finding the Fourth Proportional to 28,985.80, 43,493.10 and 11,456.20

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Solution

The fourth proportional to 28,985.80, 43,493.10 and 11,456.20 is: 17,189.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,985.80 : 43,493.10 = 11,456.20 : x
  2. Step 2: Convert to fraction form
    28,985.80/43,493.10 = 11,456.20/x
  3. Step 3: Cross multiply
    28,985.80x = 43,493.10 × 11,456.20
  4. Step 4: Simplify right side
    28,985.80x = 498,265,652.22
  5. Step 5: Solve for x
    x = 498,265,652.22/28,985.80
  6. Step 6: Final answer
    x = 17,189.99

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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.