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Finding the Fourth Proportional to 14,010.81, 20,998.05 and 5,681.10

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Solution

The fourth proportional to 14,010.81, 20,998.05 and 5,681.10 is: 8,514.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,010.81 : 20,998.05 = 5,681.10 : x
  2. Step 2: Convert to fraction form
    14,010.81/20,998.05 = 5,681.10/x
  3. Step 3: Cross multiply
    14,010.81x = 20,998.05 × 5,681.10
  4. Step 4: Simplify right side
    14,010.81x = 119,292,021.86
  5. Step 5: Solve for x
    x = 119,292,021.86/14,010.81
  6. Step 6: Final answer
    x = 8,514.28

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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.