Home / 28,988.96-40,005.41-16,243.09

Finding the Fourth Proportional to 28,988.96, 40,005.41 and 16,243.09

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Solution

The fourth proportional to 28,988.96, 40,005.41 and 16,243.09 is: 22,415.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,988.96 : 40,005.41 = 16,243.09 : x
  2. Step 2: Convert to fraction form
    28,988.96/40,005.41 = 16,243.09/x
  3. Step 3: Cross multiply
    28,988.96x = 40,005.41 × 16,243.09
  4. Step 4: Simplify right side
    28,988.96x = 649,811,475.12
  5. Step 5: Solve for x
    x = 649,811,475.12/28,988.96
  6. Step 6: Final answer
    x = 22,415.83

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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.