Home / 39,394.48-54,365.58-21,490.51

Finding the Fourth Proportional to 39,394.48, 54,365.58 and 21,490.51

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Solution

The fourth proportional to 39,394.48, 54,365.58 and 21,490.51 is: 29,657.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,394.48 : 54,365.58 = 21,490.51 : x
  2. Step 2: Convert to fraction form
    39,394.48/54,365.58 = 21,490.51/x
  3. Step 3: Cross multiply
    39,394.48x = 54,365.58 × 21,490.51
  4. Step 4: Simplify right side
    39,394.48x = 1,168,344,040.65
  5. Step 5: Solve for x
    x = 1,168,344,040.65/39,394.48
  6. Step 6: Final answer
    x = 29,657.56

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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.