Home / 20,299.40-30,438.30-8,599.40

Finding the Fourth Proportional to 20,299.40, 30,438.30 and 8,599.40

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Solution

The fourth proportional to 20,299.40, 30,438.30 and 8,599.40 is: 12,894.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,299.40 : 30,438.30 = 8,599.40 : x
  2. Step 2: Convert to fraction form
    20,299.40/30,438.30 = 8,599.40/x
  3. Step 3: Cross multiply
    20,299.40x = 30,438.30 × 8,599.40
  4. Step 4: Simplify right side
    20,299.40x = 261,751,117.02
  5. Step 5: Solve for x
    x = 261,751,117.02/20,299.40
  6. Step 6: Final answer
    x = 12,894.52

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Half scale
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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.