Home / 20,729.51-28,607.14-11,298.07

Finding the Fourth Proportional to 20,729.51, 28,607.14 and 11,298.07

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Solution

The fourth proportional to 20,729.51, 28,607.14 and 11,298.07 is: 15,591.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.51 : 28,607.14 = 11,298.07 : x
  2. Step 2: Convert to fraction form
    20,729.51/28,607.14 = 11,298.07/x
  3. Step 3: Cross multiply
    20,729.51x = 28,607.14 × 11,298.07
  4. Step 4: Simplify right side
    20,729.51x = 323,205,470.22
  5. Step 5: Solve for x
    x = 323,205,470.22/20,729.51
  6. Step 6: Final answer
    x = 15,591.56

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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.