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Finding the Fourth Proportional to 28,473.31, 42,695.62 and 9,491.22

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Solution

The fourth proportional to 28,473.31, 42,695.62 and 9,491.22 is: 14,232.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,473.31 : 42,695.62 = 9,491.22 : x
  2. Step 2: Convert to fraction form
    28,473.31/42,695.62 = 9,491.22/x
  3. Step 3: Cross multiply
    28,473.31x = 42,695.62 × 9,491.22
  4. Step 4: Simplify right side
    28,473.31x = 405,233,522.46
  5. Step 5: Solve for x
    x = 405,233,522.46/28,473.31
  6. Step 6: Final answer
    x = 14,232.05

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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.