Home / 20,561.40-28,374.99-12,063.09

Finding the Fourth Proportional to 20,561.40, 28,374.99 and 12,063.09

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Solution

The fourth proportional to 20,561.40, 28,374.99 and 12,063.09 is: 16,647.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561.40 : 28,374.99 = 12,063.09 : x
  2. Step 2: Convert to fraction form
    20,561.40/28,374.99 = 12,063.09/x
  3. Step 3: Cross multiply
    20,561.40x = 28,374.99 × 12,063.09
  4. Step 4: Simplify right side
    20,561.40x = 342,290,058.12
  5. Step 5: Solve for x
    x = 342,290,058.12/20,561.40
  6. Step 6: Final answer
    x = 16,647.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.