Home / 20,618.42-28,457.65-11,666.26

Finding the Fourth Proportional to 20,618.42, 28,457.65 and 11,666.26

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Solution

The fourth proportional to 20,618.42, 28,457.65 and 11,666.26 is: 16,101.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.42 : 28,457.65 = 11,666.26 : x
  2. Step 2: Convert to fraction form
    20,618.42/28,457.65 = 11,666.26/x
  3. Step 3: Cross multiply
    20,618.42x = 28,457.65 × 11,666.26
  4. Step 4: Simplify right side
    20,618.42x = 331,994,343.89
  5. Step 5: Solve for x
    x = 331,994,343.89/20,618.42
  6. Step 6: Final answer
    x = 16,101.83

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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.