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Finding the Fourth Proportional to 28,991.40, 43,487.10 and 22,422.30

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Solution

The fourth proportional to 28,991.40, 43,487.10 and 22,422.30 is: 33,633.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,991.40 : 43,487.10 = 22,422.30 : x
  2. Step 2: Convert to fraction form
    28,991.40/43,487.10 = 22,422.30/x
  3. Step 3: Cross multiply
    28,991.40x = 43,487.10 × 22,422.30
  4. Step 4: Simplify right side
    28,991.40x = 975,080,802.33
  5. Step 5: Solve for x
    x = 975,080,802.33/28,991.40
  6. Step 6: Final answer
    x = 33,633.45

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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.