Home / 18,890.70-28,337.06-5,742.07

Finding the Fourth Proportional to 18,890.70, 28,337.06 and 5,742.07

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Solution

The fourth proportional to 18,890.70, 28,337.06 and 5,742.07 is: 8,613.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.70 : 28,337.06 = 5,742.07 : x
  2. Step 2: Convert to fraction form
    18,890.70/28,337.06 = 5,742.07/x
  3. Step 3: Cross multiply
    18,890.70x = 28,337.06 × 5,742.07
  4. Step 4: Simplify right side
    18,890.70x = 162,713,382.11
  5. Step 5: Solve for x
    x = 162,713,382.11/18,890.70
  6. Step 6: Final answer
    x = 8,613.41

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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.