Home / 14,412.78-19,890.60-8,125.14

Finding the Fourth Proportional to 14,412.78, 19,890.60 and 8,125.14

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Solution

The fourth proportional to 14,412.78, 19,890.60 and 8,125.14 is: 11,213.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,412.78 : 19,890.60 = 8,125.14 : x
  2. Step 2: Convert to fraction form
    14,412.78/19,890.60 = 8,125.14/x
  3. Step 3: Cross multiply
    14,412.78x = 19,890.60 × 8,125.14
  4. Step 4: Simplify right side
    14,412.78x = 161,613,909.68
  5. Step 5: Solve for x
    x = 161,613,909.68/14,412.78
  6. Step 6: Final answer
    x = 11,213.24

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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.