Home / 28,743.65-39,654.96-21,208.07

Finding the Fourth Proportional to 28,743.65, 39,654.96 and 21,208.07

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Solution

The fourth proportional to 28,743.65, 39,654.96 and 21,208.07 is: 29,258.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,743.65 : 39,654.96 = 21,208.07 : x
  2. Step 2: Convert to fraction form
    28,743.65/39,654.96 = 21,208.07/x
  3. Step 3: Cross multiply
    28,743.65x = 39,654.96 × 21,208.07
  4. Step 4: Simplify right side
    28,743.65x = 841,004,969.25
  5. Step 5: Solve for x
    x = 841,004,969.25/28,743.65
  6. Step 6: Final answer
    x = 29,258.81

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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.