Home / 21,533.07-29,724.75-20,187.93

Finding the Fourth Proportional to 21,533.07, 29,724.75 and 20,187.93

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Solution

The fourth proportional to 21,533.07, 29,724.75 and 20,187.93 is: 27,867.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,533.07 : 29,724.75 = 20,187.93 : x
  2. Step 2: Convert to fraction form
    21,533.07/29,724.75 = 20,187.93/x
  3. Step 3: Cross multiply
    21,533.07x = 29,724.75 × 20,187.93
  4. Step 4: Simplify right side
    21,533.07x = 600,081,172.27
  5. Step 5: Solve for x
    x = 600,081,172.27/21,533.07
  6. Step 6: Final answer
    x = 27,867.89

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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.