Home / 39,554.51-54,585.09-21,405.20

Finding the Fourth Proportional to 39,554.51, 54,585.09 and 21,405.20

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Solution

The fourth proportional to 39,554.51, 54,585.09 and 21,405.20 is: 29,539.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,554.51 : 54,585.09 = 21,405.20 : x
  2. Step 2: Convert to fraction form
    39,554.51/54,585.09 = 21,405.20/x
  3. Step 3: Cross multiply
    39,554.51x = 54,585.09 × 21,405.20
  4. Step 4: Simplify right side
    39,554.51x = 1,168,404,768.47
  5. Step 5: Solve for x
    x = 1,168,404,768.47/39,554.51
  6. Step 6: Final answer
    x = 29,539.10

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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.