Home / 20,577.48-30,878.52-8,890.68

Finding the Fourth Proportional to 20,577.48, 30,878.52 and 8,890.68

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Solution

The fourth proportional to 20,577.48, 30,878.52 and 8,890.68 is: 13,341.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.48 : 30,878.52 = 8,890.68 : x
  2. Step 2: Convert to fraction form
    20,577.48/30,878.52 = 8,890.68/x
  3. Step 3: Cross multiply
    20,577.48x = 30,878.52 × 8,890.68
  4. Step 4: Simplify right side
    20,577.48x = 274,531,040.19
  5. Step 5: Solve for x
    x = 274,531,040.19/20,577.48
  6. Step 6: Final answer
    x = 13,341.33

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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.