Home / 20,415.60-30,599.10-8,569.35

Finding the Fourth Proportional to 20,415.60, 30,599.10 and 8,569.35

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Solution

The fourth proportional to 20,415.60, 30,599.10 and 8,569.35 is: 12,843.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415.60 : 30,599.10 = 8,569.35 : x
  2. Step 2: Convert to fraction form
    20,415.60/30,599.10 = 8,569.35/x
  3. Step 3: Cross multiply
    20,415.60x = 30,599.10 × 8,569.35
  4. Step 4: Simplify right side
    20,415.60x = 262,214,397.59
  5. Step 5: Solve for x
    x = 262,214,397.59/20,415.60
  6. Step 6: Final answer
    x = 12,843.83

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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.