Home / 18,888.35-28,340.24-13,329.72

Finding the Fourth Proportional to 18,888.35, 28,340.24 and 13,329.72

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Solution

The fourth proportional to 18,888.35, 28,340.24 and 13,329.72 is: 20,000.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,888.35 : 28,340.24 = 13,329.72 : x
  2. Step 2: Convert to fraction form
    18,888.35/28,340.24 = 13,329.72/x
  3. Step 3: Cross multiply
    18,888.35x = 28,340.24 × 13,329.72
  4. Step 4: Simplify right side
    18,888.35x = 377,767,397.28
  5. Step 5: Solve for x
    x = 377,767,397.28/18,888.35
  6. Step 6: Final answer
    x = 20,000.03

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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.