Home / 18,869.14-28,302.90-6,388.66

Finding the Fourth Proportional to 18,869.14, 28,302.90 and 6,388.66

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Solution

The fourth proportional to 18,869.14, 28,302.90 and 6,388.66 is: 9,582.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.14 : 28,302.90 = 6,388.66 : x
  2. Step 2: Convert to fraction form
    18,869.14/28,302.90 = 6,388.66/x
  3. Step 3: Cross multiply
    18,869.14x = 28,302.90 × 6,388.66
  4. Step 4: Simplify right side
    18,869.14x = 180,817,605.11
  5. Step 5: Solve for x
    x = 180,817,605.11/18,869.14
  6. Step 6: Final answer
    x = 9,582.72

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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.