Home / 18,953.11-28,429.67-5,803.80

Finding the Fourth Proportional to 18,953.11, 28,429.67 and 5,803.80

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Solution

The fourth proportional to 18,953.11, 28,429.67 and 5,803.80 is: 8,705.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,953.11 : 28,429.67 = 5,803.80 : x
  2. Step 2: Convert to fraction form
    18,953.11/28,429.67 = 5,803.80/x
  3. Step 3: Cross multiply
    18,953.11x = 28,429.67 × 5,803.80
  4. Step 4: Simplify right side
    18,953.11x = 165,000,118.75
  5. Step 5: Solve for x
    x = 165,000,118.75/18,953.11
  6. Step 6: Final answer
    x = 8,705.70

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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.