Home / 28,991.04-43,431.24-15,630.90

Finding the Fourth Proportional to 28,991.04, 43,431.24 and 15,630.90

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Solution

The fourth proportional to 28,991.04, 43,431.24 and 15,630.90 is: 23,416.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991.04 : 43,431.24 = 15,630.90 : x
  2. Step 2: Convert to fraction form
    28,991.04/43,431.24 = 15,630.90/x
  3. Step 3: Cross multiply
    28,991.04x = 43,431.24 × 15,630.90
  4. Step 4: Simplify right side
    28,991.04x = 678,869,369.32
  5. Step 5: Solve for x
    x = 678,869,369.32/28,991.04
  6. Step 6: Final answer
    x = 23,416.52

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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.