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Finding the Fourth Proportional to 29,991.80, 44,987.70 and 18,862.40

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Solution

The fourth proportional to 29,991.80, 44,987.70 and 18,862.40 is: 28,293.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,991.80 : 44,987.70 = 18,862.40 : x
  2. Step 2: Convert to fraction form
    29,991.80/44,987.70 = 18,862.40/x
  3. Step 3: Cross multiply
    29,991.80x = 44,987.70 × 18,862.40
  4. Step 4: Simplify right side
    29,991.80x = 848,575,992.48
  5. Step 5: Solve for x
    x = 848,575,992.48/29,991.80
  6. Step 6: Final answer
    x = 28,293.60

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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.