Home / 10,209.96-15,312.42-2,814.08

Finding the Fourth Proportional to 10,209.96, 15,312.42 and 2,814.08

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Solution

The fourth proportional to 10,209.96, 15,312.42 and 2,814.08 is: 4,220.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,209.96 : 15,312.42 = 2,814.08 : x
  2. Step 2: Convert to fraction form
    10,209.96/15,312.42 = 2,814.08/x
  3. Step 3: Cross multiply
    10,209.96x = 15,312.42 × 2,814.08
  4. Step 4: Simplify right side
    10,209.96x = 43,090,374.87
  5. Step 5: Solve for x
    x = 43,090,374.87/10,209.96
  6. Step 6: Final answer
    x = 4,220.43

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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.