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Finding the Fourth Proportional to 35,987.40, 54,005.40 and 20,192.40

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Solution

The fourth proportional to 35,987.40, 54,005.40 and 20,192.40 is: 30,302.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,987.40 : 54,005.40 = 20,192.40 : x
  2. Step 2: Convert to fraction form
    35,987.40/54,005.40 = 20,192.40/x
  3. Step 3: Cross multiply
    35,987.40x = 54,005.40 × 20,192.40
  4. Step 4: Simplify right side
    35,987.40x = 1,090,498,638.96
  5. Step 5: Solve for x
    x = 1,090,498,638.96/35,987.40
  6. Step 6: Final answer
    x = 30,302.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.