Home / 14,115.10-21,209.10-12,511.30

Finding the Fourth Proportional to 14,115.10, 21,209.10 and 12,511.30

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Solution

The fourth proportional to 14,115.10, 21,209.10 and 12,511.30 is: 18,799.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,115.10 : 21,209.10 = 12,511.30 : x
  2. Step 2: Convert to fraction form
    14,115.10/21,209.10 = 12,511.30/x
  3. Step 3: Cross multiply
    14,115.10x = 21,209.10 × 12,511.30
  4. Step 4: Simplify right side
    14,115.10x = 265,353,412.83
  5. Step 5: Solve for x
    x = 265,353,412.83/14,115.10
  6. Step 6: Final answer
    x = 18,799.26

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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.