Home / 18,711.58-28,047.27-9,333.07

Finding the Fourth Proportional to 18,711.58, 28,047.27 and 9,333.07

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Solution

The fourth proportional to 18,711.58, 28,047.27 and 9,333.07 is: 13,989.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,711.58 : 28,047.27 = 9,333.07 : x
  2. Step 2: Convert to fraction form
    18,711.58/28,047.27 = 9,333.07/x
  3. Step 3: Cross multiply
    18,711.58x = 28,047.27 × 9,333.07
  4. Step 4: Simplify right side
    18,711.58x = 261,767,134.22
  5. Step 5: Solve for x
    x = 261,767,134.22/18,711.58
  6. Step 6: Final answer
    x = 13,989.58

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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.