Home / 20,577.34-30,878.61-8,890.30

Finding the Fourth Proportional to 20,577.34, 30,878.61 and 8,890.30

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Solution

The fourth proportional to 20,577.34, 30,878.61 and 8,890.30 is: 13,340.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.34 : 30,878.61 = 8,890.30 : x
  2. Step 2: Convert to fraction form
    20,577.34/30,878.61 = 8,890.30/x
  3. Step 3: Cross multiply
    20,577.34x = 30,878.61 × 8,890.30
  4. Step 4: Simplify right side
    20,577.34x = 274,520,106.48
  5. Step 5: Solve for x
    x = 274,520,106.48/20,577.34
  6. Step 6: Final answer
    x = 13,340.89

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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.