Home / 14,815.51-20,445.21-8,855.12

Finding the Fourth Proportional to 14,815.51, 20,445.21 and 8,855.12

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Solution

The fourth proportional to 14,815.51, 20,445.21 and 8,855.12 is: 12,219.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,815.51 : 20,445.21 = 8,855.12 : x
  2. Step 2: Convert to fraction form
    14,815.51/20,445.21 = 8,855.12/x
  3. Step 3: Cross multiply
    14,815.51x = 20,445.21 × 8,855.12
  4. Step 4: Simplify right side
    14,815.51x = 181,044,839.09
  5. Step 5: Solve for x
    x = 181,044,839.09/14,815.51
  6. Step 6: Final answer
    x = 12,219.96

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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.