Home / 18,988.29-28,453.14-7,885.62

Finding the Fourth Proportional to 18,988.29, 28,453.14 and 7,885.62

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Solution

The fourth proportional to 18,988.29, 28,453.14 and 7,885.62 is: 11,816.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.29 : 28,453.14 = 7,885.62 : x
  2. Step 2: Convert to fraction form
    18,988.29/28,453.14 = 7,885.62/x
  3. Step 3: Cross multiply
    18,988.29x = 28,453.14 × 7,885.62
  4. Step 4: Simplify right side
    18,988.29x = 224,370,649.85
  5. Step 5: Solve for x
    x = 224,370,649.85/18,988.29
  6. Step 6: Final answer
    x = 11,816.26

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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.