Home / 18,725.07-28,088.18-8,189.67

Finding the Fourth Proportional to 18,725.07, 28,088.18 and 8,189.67

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Solution

The fourth proportional to 18,725.07, 28,088.18 and 8,189.67 is: 12,284.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.07 : 28,088.18 = 8,189.67 : x
  2. Step 2: Convert to fraction form
    18,725.07/28,088.18 = 8,189.67/x
  3. Step 3: Cross multiply
    18,725.07x = 28,088.18 × 8,189.67
  4. Step 4: Simplify right side
    18,725.07x = 230,032,925.10
  5. Step 5: Solve for x
    x = 230,032,925.10/18,725.07
  6. Step 6: Final answer
    x = 12,284.76

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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.