Home / 20,412.04-28,168.59-11,459.56

Finding the Fourth Proportional to 20,412.04, 28,168.59 and 11,459.56

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Solution

The fourth proportional to 20,412.04, 28,168.59 and 11,459.56 is: 15,814.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,412.04 : 28,168.59 = 11,459.56 : x
  2. Step 2: Convert to fraction form
    20,412.04/28,168.59 = 11,459.56/x
  3. Step 3: Cross multiply
    20,412.04x = 28,168.59 × 11,459.56
  4. Step 4: Simplify right side
    20,412.04x = 322,799,647.22
  5. Step 5: Solve for x
    x = 322,799,647.22/20,412.04
  6. Step 6: Final answer
    x = 15,814.18

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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.