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Finding the Fourth Proportional to 18,927.12, 28,347.42 and 9,073.32

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Solution

The fourth proportional to 18,927.12, 28,347.42 and 9,073.32 is: 13,589.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,927.12 : 28,347.42 = 9,073.32 : x
  2. Step 2: Convert to fraction form
    18,927.12/28,347.42 = 9,073.32/x
  3. Step 3: Cross multiply
    18,927.12x = 28,347.42 × 9,073.32
  4. Step 4: Simplify right side
    18,927.12x = 257,205,212.83
  5. Step 5: Solve for x
    x = 257,205,212.83/18,927.12
  6. Step 6: Final answer
    x = 13,589.24

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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.