Home / 39,693.33-54,776.59-21,788.64

Finding the Fourth Proportional to 39,693.33, 54,776.59 and 21,788.64

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Solution

The fourth proportional to 39,693.33, 54,776.59 and 21,788.64 is: 30,068.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,693.33 : 54,776.59 = 21,788.64 : x
  2. Step 2: Convert to fraction form
    39,693.33/54,776.59 = 21,788.64/x
  3. Step 3: Cross multiply
    39,693.33x = 54,776.59 × 21,788.64
  4. Step 4: Simplify right side
    39,693.33x = 1,193,507,345.47
  5. Step 5: Solve for x
    x = 1,193,507,345.47/39,693.33
  6. Step 6: Final answer
    x = 30,068.21

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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.