Home / 20,425.49-28,187.10-11,350.81

Finding the Fourth Proportional to 20,425.49, 28,187.10 and 11,350.81

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Solution

The fourth proportional to 20,425.49, 28,187.10 and 11,350.81 is: 15,664.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425.49 : 28,187.10 = 11,350.81 : x
  2. Step 2: Convert to fraction form
    20,425.49/28,187.10 = 11,350.81/x
  3. Step 3: Cross multiply
    20,425.49x = 28,187.10 × 11,350.81
  4. Step 4: Simplify right side
    20,425.49x = 319,946,330.26
  5. Step 5: Solve for x
    x = 319,946,330.26/20,425.49
  6. Step 6: Final answer
    x = 15,664.07

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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.